test fixups

diff --git a/test/functional/feature_rbf.py b/test/functional/feature_rbf.py
index 4117326b..86fe2f5b 100755
--- a/test/functional/feature_rbf.py
+++ b/test/functional/feature_rbf.py
@@ -594,7 +594,7 @@ class ReplaceByFeeTest(BitcoinTestFramework):
         node = self.nodes[0]
         for incremental_setting in (0, 5, 10, 50, 100, 234, 1000, 5000, 21000):
             incremental_setting_decimal = incremental_setting / Decimal(COIN)
-            self.log.info(f"-> Test -incrementalrelayfee={incremental_setting_decimal:.8f}sat/kvB...")
+            self.log.info(f"-> Test -incrementalrelayfee={incremental_setting:.8f}sat/kvB...")
             self.restart_node(0, extra_args=[f"-incrementalrelayfee={incremental_setting_decimal:.8f}", "-persistmempool=0"])
 
             # When incremental relay feerate is higher than min relay feerate, min relay feerate is automatically increased.
diff --git a/test/functional/mempool_package_rbf.py b/test/functional/mempool_package_rbf.py
index 54f3a90c..3eb0abd3 100755
--- a/test/functional/mempool_package_rbf.py
+++ b/test/functional/mempool_package_rbf.py
@@ -168,7 +168,7 @@ class PackageRBFTest(BitcoinTestFramework):
         failure_package_hex3, failure_package_txns3 = self.create_simple_package(coin, parent_fee=DEFAULT_FEE, child_fee=DEFAULT_CHILD_FEE + incremental_sats_short)
         assert_equal(package_3_size, sum([tx.get_vsize() for tx in failure_package_txns3]))
         pkg_results3 = node.submitpackage(failure_package_hex3)
-        assert_equal(f"package RBF failed: insufficient anti-DoS fees, rejecting replacement {failure_package_txns3[1].txid_hex}, not enough additional fees to relay; {incremental_sats_short:8f} < {incremental_sats_required:8f}", pkg_results3["package_msg"])
+        assert_equal(f"package RBF failed: insufficient anti-DoS fees, rejecting replacement {failure_package_txns3[1].txid_hex}, not enough additional fees to relay; {incremental_sats_short:.8f} < {incremental_sats_required:.8f}", pkg_results3["package_msg"])
         self.assert_mempool_contents(expected=package_txns1)
 
         success_package_hex3, success_package_txns3 = self.create_simple_package(coin, parent_fee=DEFAULT_FEE, child_fee=DEFAULT_CHILD_FEE + incremental_sats_required)
diff --git a/test/functional/mempool_truc.py b/test/functional/mempool_truc.py
index 428bfb0b..562afcd3 100755
--- a/test/functional/mempool_truc.py
+++ b/test/functional/mempool_truc.py
@@ -617,6 +617,10 @@ class MempoolTRUC(BitcoinTestFramework):
                 assert_greater_than(get_fee(tx_v3_0fee_parent["tx"].get_vsize(), minrelayfeerate), 0)
                 # Always need to pay at least 1 satoshi for entry, even if minimum feerate is very low
                 assert_greater_than(total_v3_fee, 0)
+                # Also create a version where the child is at minrelaytxfee
+                tx_v3_child_minrelay = self.wallet.create_self_transfer(utxo_to_spend=tx_v3_0fee_parent["new_utxo"], fee_rate=minrelayfeerate, version=3)
+                result_truc_minrelay = node.submitpackage([tx_v3_0fee_parent["hex"], tx_v3_child_minrelay["hex"]])
+                assert_equal(result_truc_minrelay["package_msg"], "transaction failed")
 
             tx_v2_0fee_parent = self.wallet.create_self_transfer(fee=0, fee_rate=0, confirmed_only=True, version=2)
             tx_v2_child = self.wallet.create_self_transfer(utxo_to_spend=tx_v2_0fee_parent["new_utxo"], fee_rate=high_feerate, version=2)
diff --git a/test/functional/mining_basic.py b/test/functional/mining_basic.py
index 4f104359..7e71761a 100755
--- a/test/functional/mining_basic.py
+++ b/test/functional/mining_basic.py
@@ -152,19 +152,20 @@ class MiningTest(BitcoinTestFramework):
                 blockmintxfee_parameter = f"-blockmintxfee={blockmintxfee_btc_kvb:.8f}"
                 self.log.info(f"-> Test {blockmintxfee_parameter} ({blockmintxfee_sat_kvb} sat/kvB)...")
                 self.restart_node(0, extra_args=[blockmintxfee_parameter, '-minrelaytxfee=0', '-persistmempool=0'])
-                self.wallet.rescan_utxos()  # to avoid spending outputs of txs that are not in mempool anymore after restart
             assert_equal(node.getmininginfo()['blockmintxfee'], blockmintxfee_btc_kvb)
 
             # submit one tx with exactly the blockmintxfee rate, and one slightly below
             tx_with_min_feerate = self.wallet.send_self_transfer(from_node=node, fee_rate=blockmintxfee_btc_kvb, confirmed_only=True)
             assert_equal(tx_with_min_feerate["fee"], get_fee(tx_with_min_feerate["tx"].get_vsize(), blockmintxfee_btc_kvb))
-            if blockmintxfee_sat_kvb > 5:
+            if blockmintxfee_sat_kvb >= 10:
                 lowerfee_btc_kvb = blockmintxfee_btc_kvb - Decimal(10)/COIN  # 0.01 sat/vbyte lower
+                assert_greater_than(blockmintxfee_btc_kvb, lowerfee_btc_kvb)
+                assert_greater_than_or_equal(lowerfee_btc_kvb, 0)
                 tx_below_min_feerate = self.wallet.send_self_transfer(from_node=node, fee_rate=lowerfee_btc_kvb, confirmed_only=True)
                 assert_equal(tx_below_min_feerate["fee"], get_fee(tx_below_min_feerate["tx"].get_vsize(), lowerfee_btc_kvb))
             else:  # go below zero fee by using modified fees
                 tx_below_min_feerate = self.wallet.send_self_transfer(from_node=node, fee_rate=blockmintxfee_btc_kvb, confirmed_only=True)
-                node.prioritisetransaction(tx_below_min_feerate["txid"], 0, -1)
+                node.prioritisetransaction(tx_below_min_feerate["txid"], 0, -11)
 
             # check that tx below specified fee-rate is neither in template nor in the actual block
             block_template = node.getblocktemplate(NORMAL_GBT_REQUEST_PARAMS)
diff --git a/test/functional/wallet_bumpfee.py b/test/functional/wallet_bumpfee.py
index 097c3957..d3972bef 100755
--- a/test/functional/wallet_bumpfee.py
+++ b/test/functional/wallet_bumpfee.py
@@ -848,12 +848,12 @@ def test_bumpfee_with_feerate_ignores_walletincrementalrelayfee(self, rbf_node,
     assert_raises_rpc_error(-8, "Insufficient total fee", rbf_node.bumpfee, tx["txid"], {"fee_rate": 1})
     assert_raises_rpc_error(-8, "Insufficient total fee", rbf_node.bumpfee, tx["txid"], {"fee_rate": 2})
 
-    # Ensure you can not fee bump if the fee_rate is more than original fee_rate but the total fee from new fee_rate is
-    # less than (original fee + incrementalrelayfee)
-    assert_raises_rpc_error(-8, "Insufficient total fee", rbf_node.bumpfee, tx["txid"], {"fee_rate": 2.05})
+    # Ensure you can not fee bump if the fee_rate is more than original fee_rate but the additional fee does
+    # not cover incrementalrelayfee for the size of the replacement transaction
+    assert_raises_rpc_error(-8, "Insufficient total fee", rbf_node.bumpfee, tx["txid"], {"fee_rate": 2.09})
 
     # You can fee bump as long as the new fee set from fee_rate is at least (original fee + incrementalrelayfee)
-    rbf_node.bumpfee(tx["txid"], {"fee_rate": 3})
+    rbf_node.bumpfee(tx["txid"], {"fee_rate": 2.1})
     self.clear_mempool()