diff --git a/core/core.go b/core/core.go
index 8d98b424d..6e37cfc5a 100644
--- a/core/core.go
+++ b/core/core.go
@@ -1306,7 +1306,7 @@ func (c *Core) GetUTXOsByAddress(address common.Address) ([]*types.UtxoEntry, er
 	for _, outpoint := range outpointsForAddress {
 		entry := rawdb.GetUTXO(c.sl.sliceDb, outpoint.TxHash, outpoint.Index)
 		if entry == nil {
-			return nil, errors.New("failed to get UTXO for address")
+			continue
 		}
 		utxos = append(utxos, entry)
 	}
diff --git a/core/state_transition.go b/core/state_transition.go
index cb104e3b3..b817e28d2 100644
--- a/core/state_transition.go
+++ b/core/state_transition.go
@@ -261,7 +261,7 @@ func (st *StateTransition) preCheck() error {
 	}
 	// Make sure that transaction gasPrice is greater than the baseFee
 	// Skip the checks if gas fields are zero and baseFee was explicitly disabled (eth_call)
-	if !st.evm.Config.NoBaseFee || st.gasPrice.BitLen() > 0 || st.gasPrice.BitLen() > 0 {
+	if !st.evm.Config.NoBaseFee || st.gasPrice.BitLen() > 0 || st.minerTip.BitLen() > 0 {
 		if l := st.gasPrice.BitLen(); l > 256 {
 			return fmt.Errorf("%w: address %v, gasPrice bit length: %d", ErrFeeCapVeryHigh,
 				st.msg.From().Hex(), l)
diff --git a/internal/quaiapi/api.go b/internal/quaiapi/api.go
index 0ed938d42..e015a9200 100644
--- a/internal/quaiapi/api.go
+++ b/internal/quaiapi/api.go
@@ -704,14 +704,14 @@ func DoEstimateGas(ctx context.Context, b Backend, args TransactionArgs, blockNr
 		hi = uint64(*args.Gas)
 	} else {
 		// Retrieve the block to act as the gas ceiling
-		block, err := b.BlockByNumberOrHash(ctx, blockNrOrHash)
+		header, err := b.HeaderByNumberOrHash(ctx, blockNrOrHash)
 		if err != nil {
 			return 0, err
 		}
-		if block == nil {
+		if header == nil {
 			return 0, errors.New("block not found")
 		}
-		hi = block.GasLimit()
+		hi = header.GasLimit()
 		if hi == 0 {
 			hi = params.GasCeil
 		}
diff --git a/internal/quaiapi/quai_api.go b/internal/quaiapi/quai_api.go
index 81855594f..6cf31b586 100644
--- a/internal/quaiapi/quai_api.go
+++ b/internal/quaiapi/quai_api.go
@@ -820,7 +820,7 @@ func (s *PublicBlockChainQuaiAPI) EstimateGas(ctx context.Context, args Transact
 		bNrOrHash = *blockNrOrHash
 	}
 
-	if args.from(s.b.NodeLocation()).IsInQuaiLedgerScope() && args.To.IsInQiLedgerScope() {
+	if args.from(s.b.NodeLocation()).IsInQuaiLedgerScope() && args.To != nil && args.To.IsInQiLedgerScope() {
 		// Conversion transaction
 		var header *types.WorkObject
 		var err error
diff --git a/internal/quaiapi/transaction_args.go b/internal/quaiapi/transaction_args.go
index b2e61a9fe..1ee57a13c 100644
--- a/internal/quaiapi/transaction_args.go
+++ b/internal/quaiapi/transaction_args.go
@@ -169,10 +169,7 @@ func (args *TransactionArgs) ToMessage(globalGasCap uint64, baseFee *big.Int, no
 		minerTip *big.Int
 	)
 	// User specified max fee (or none), use those
-	gasPrice = new(big.Int)
-	if args.GasPrice != nil {
-		gasPrice = args.GasPrice.ToInt()
-	}
+	gasPrice = new(big.Int).Set(common.Big0)
 	minerTip = gasPrice
 	value := new(big.Int)
 	if args.Value != nil {
@@ -183,6 +180,7 @@ func (args *TransactionArgs) ToMessage(globalGasCap uint64, baseFee *big.Int, no
 	if args.AccessList != nil {
 		accessList = *args.AccessList
 	}
+
 	msg := types.NewMessage(addr, args.To, uint64(*args.Nonce), value, gas, gasPrice, minerTip, data, accessList, false)
 	return msg, nil
 }