diff --git a/cmd/ethrex/ethrex.rs b/cmd/ethrex/ethrex.rs
index c5eb55dd9..c4a0e0f83 100644
--- a/cmd/ethrex/ethrex.rs
+++ b/cmd/ethrex/ethrex.rs
@@ -219,11 +219,21 @@ async fn main() {
             let authrpc_jwtsecret = std::fs::read(authrpc_jwtsecret).expect("Failed to read JWT secret");
             let head_block_hash = {
                 let current_block_number = store.get_latest_block_number().unwrap();
-                store.get_canonical_block_hash(current_block_number).unwrap().unwrap()
+                store
+                    .get_canonical_block_hash(current_block_number)
+                    .unwrap()
+                    .unwrap()
             };
             let max_tries = 3;
             let url = format!("http://{authrpc_socket_addr}");
-            let block_producer_engine = ethrex_dev::block_producer::start_block_producer(url, authrpc_jwtsecret.into(), head_block_hash, max_tries, 1000, ethrex_core::Address::default());
+            let block_producer_engine = ethrex_dev::block_producer::start_block_producer(
+                url,
+                authrpc_jwtsecret.into(),
+                head_block_hash,
+                max_tries,
+                1000,
+                ethrex_core::Address::default(),
+            );
             tracker.spawn(block_producer_engine);
         } else {
             let networking = ethrex_net::start_network(
diff --git a/crates/blockchain/payload.rs b/crates/blockchain/payload.rs
index 01ba173c5..2b430a4ae 100644
--- a/crates/blockchain/payload.rs
+++ b/crates/blockchain/payload.rs
@@ -1,5 +1,5 @@
 use std::{
-    cmp::{min, Ordering},
+    cmp::{max, Ordering},
     collections::HashMap,
 };
 
@@ -125,7 +125,7 @@ pub fn create_payload(args: &BuildPayloadArgs, storage: &Store) -> Result<Block,
 fn calc_gas_limit(parent_gas_limit: u64, desired_limit: u64) -> u64 {
     let delta = parent_gas_limit / GAS_LIMIT_BOUND_DIVISOR - 1;
     let mut limit = parent_gas_limit;
-    let desired_limit = min(desired_limit, MIN_GAS_LIMIT);
+    let desired_limit = max(desired_limit, MIN_GAS_LIMIT);
     if limit < desired_limit {
         limit = parent_gas_limit + delta;
         if limit > desired_limit {
diff --git a/crates/l2/proposer/prover_server.rs b/crates/l2/proposer/prover_server.rs
index b4b936358..551fab762 100644
--- a/crates/l2/proposer/prover_server.rs
+++ b/crates/l2/proposer/prover_server.rs
@@ -646,7 +646,7 @@ impl ProverServer {
 
     pub async fn main_logic_dev(&self) -> Result<(), ProverServerError> {
         loop {
-            thread::sleep(Duration::from_millis(200));
+            thread::sleep(Duration::from_millis(1000));
 
             let last_committed_block = EthClient::get_last_committed_block(
                 &self.eth_client,
@@ -660,18 +660,13 @@ impl ProverServer {
             )
             .await?;
 
-            if last_committed_block == u64::MAX {
-                debug!("No blocks commited yet");
-                continue;
-            }
+            info!("Last committed: {last_committed_block} - Last verified: {last_verified_block}");
 
             if last_committed_block == last_verified_block {
-                debug!("No new blocks to prove");
+                warn!("No new blocks to prove");
                 continue;
             }
 
-            info!("Last committed: {last_committed_block} - Last verified: {last_verified_block}");
-
             // IOnChainProposer
             // function verify(uint256,bytes,bytes32,bytes32,bytes32,bytes,bytes)
             // blockNumber, blockProof, imageId, journalDigest, programVKey, publicValues, proofBytes
@@ -702,14 +697,18 @@ impl ProverServer {
             // offset of first bytes parameter
             calldata.extend(H256::from_low_u64_be(7 * 32).as_bytes());
             // extend with bytes32, bytes32, bytes32
-            for _ in 0..=3 {
-                calldata.extend(H256::zero().as_bytes());
-            }
-            // offset of second bytes parameter
             calldata.extend(H256::zero().as_bytes());
+            calldata.extend(H256::zero().as_bytes());
+            calldata.extend(H256::zero().as_bytes());
+            // offset of second bytes parameter
+            calldata.extend(H256::from_low_u64_be(9 * 32).as_bytes());
             // offset of third bytes parameter
+            calldata.extend(H256::from_low_u64_be(11 * 32).as_bytes());
+            // extend with size and bytes
+            calldata.extend(H256::from_low_u64_be(32).as_bytes());
+            calldata.extend(H256::zero().as_bytes());
+            calldata.extend(H256::from_low_u64_be(32).as_bytes());
             calldata.extend(H256::zero().as_bytes());
-            // extend with size of the third bytes variable -> 32bytes
             calldata.extend(H256::from_low_u64_be(32).as_bytes());
             calldata.extend(H256::zero().as_bytes());
 
diff --git a/crates/networking/rpc/eth/transaction.rs b/crates/networking/rpc/eth/transaction.rs
index d19b4c023..1a0744c65 100644
--- a/crates/networking/rpc/eth/transaction.rs
+++ b/crates/networking/rpc/eth/transaction.rs
@@ -474,6 +474,7 @@ impl RpcHandler for EstimateGasRequest {
 
         // Prepare binary search
         let mut highest_gas_limit = match transaction.gas {
+            Some(0) => block_header.gas_limit,
             Some(gas) => gas.min(block_header.gas_limit),
             None => block_header.gas_limit,
         };
@@ -539,7 +540,12 @@ fn recap_with_account_balances(
         .unwrap_or_default();
     let account_gas =
         account_balance.saturating_sub(transaction.value) / U256::from(transaction.gas_price);
-    Ok(highest_gas_limit.min(account_gas.as_u64()))
+    let account_gas = if account_gas > u64::MAX.into() {
+        u64::MAX
+    } else {
+        account_gas.as_u64()
+    };
+    Ok(highest_gas_limit.min(account_gas))
 }
 
 fn simulate_tx(