diff --git a/change_difficulty.sh b/change_difficulty.sh
new file mode 100644
index 00000000..c8ca6185
--- /dev/null
+++ b/change_difficulty.sh
@@ -0,0 +1,3 @@
+perl -pi -e "s|const MIN_DIFFICULTY: u32 =.*|const MIN_DIFFICULTY: u32 = $1;|g" src/mine.rs
+cargo build --release
+cp target/release/ore ~/.cargo/bin
\ No newline at end of file
diff --git a/change_gateway_retry.sh b/change_gateway_retry.sh
new file mode 100644
index 00000000..fd6f86fe
--- /dev/null
+++ b/change_gateway_retry.sh
@@ -0,0 +1,3 @@
+perl -pi -e "s|const GATEWAY_RETRIES: usize =.*|const GATEWAY_RETRIES: usize = $1;|g" src/send_and_confirm.rs
+cargo build --release
+cp target/release/ore ~/.cargo/bin
diff --git a/src/mine.rs b/src/mine.rs
index 46cf1da1..9a8ddb65 100644
--- a/src/mine.rs
+++ b/src/mine.rs
@@ -13,6 +13,7 @@ use rand::Rng;
 use solana_program::pubkey::Pubkey;
 use solana_rpc_client::spinner;
 use solana_sdk::signer::Signer;
+use std::time::{SystemTime, UNIX_EPOCH};
 
 use crate::{
     args::MineArgs,
@@ -21,6 +22,8 @@ use crate::{
     Miner,
 };
 
+const MIN_DIFFICULTY: u32 = 16;
+
 impl Miner {
     pub async fn mine(&self, args: MineArgs) {
         // Register, if needed.
@@ -33,24 +36,31 @@ impl Miner {
         // Start mining loop
         loop {
             // Fetch proof
+            let config = get_config(&self.rpc_client).await;
             let proof = get_proof_with_authority(&self.rpc_client, signer.pubkey()).await;
             println!(
-                "\nStake balance: {} ORE",
-                amount_u64_to_string(proof.balance)
+                "\nStake: {} ORE\n  Multiplier: {:12}x",
+                amount_u64_to_string(proof.balance),
+                calculate_multiplier(proof.balance, config.top_balance)
             );
 
             // Calc cutoff time
             let cutoff_time = self.get_cutoff(proof, args.buffer_time).await;
 
             // Run drillx
-            let config = get_config(&self.rpc_client).await;
             let solution = Self::find_hash_par(
                 proof,
                 cutoff_time,
                 args.threads,
                 config.min_difficulty as u32,
-            )
-            .await;
+            ).await;
+
+            // Check if the solution is "default" (indicating it was skipped)
+            if solution.d == [0u8; 16] && solution.n == [0u8; 8] {
+                // Print a skip message and continue to the next loop iteration
+                println!("Skipped: got a default solution.");
+                continue;
+            }
 
             // Submit most difficult hash
             let mut compute_budget = 500_000;
@@ -69,6 +79,7 @@ impl Miner {
                 .await
                 .ok();
         }
+
     }
 
     async fn find_hash_par(
@@ -88,7 +99,11 @@ impl Miner {
                     let mut memory = equix::SolverMemory::new();
                     move || {
                         let timer = Instant::now();
+                        let time_now = SystemTime::now().duration_since(UNIX_EPOCH)
+                            .expect("SystemTime before UNIX EPOCH")
+                            .as_micros() as u64;
                         let mut nonce = u64::MAX.saturating_div(threads).saturating_mul(i);
+                        nonce = time_now ^ nonce;
                         let mut best_nonce = nonce;
                         let mut best_difficulty = 0;
                         let mut best_hash = Hash::default();
@@ -110,7 +125,7 @@ impl Miner {
                             // Exit if time has elapsed
                             if nonce % 100 == 0 {
                                 if timer.elapsed().as_secs().ge(&cutoff_time) {
-                                    if best_difficulty.gt(&min_difficulty) {
+                                    if best_difficulty.ge(&min_difficulty) {
                                         // Mine until min difficulty has been met
                                         break;
                                     }
@@ -147,6 +162,12 @@ impl Miner {
             }
         }
 
+        // Check if the best difficulty meets the minimum requirement
+        if best_difficulty < MIN_DIFFICULTY {
+            progress_bar.finish_with_message(format!("Skipped: (difficulty: {} < {})", best_difficulty, MIN_DIFFICULTY));
+            return Solution::new([0u8; 16], [0u8; 8]); // Return a "default" Solution
+        }
+
         // Update log
         progress_bar.finish_with_message(format!(
             "Best hash: {} (difficulty: {})",
@@ -190,8 +211,12 @@ impl Miner {
     }
 }
 
+fn calculate_multiplier(balance: u64, top_balance: u64) -> f64 {
+    1.0 + (balance as f64 / top_balance as f64).min(1.0f64)
+}
+
 // TODO Pick a better strategy (avoid draining bus)
 fn find_bus() -> Pubkey {
     let i = rand::thread_rng().gen_range(0..BUS_COUNT);
     BUS_ADDRESSES[i]
-}
+}
\ No newline at end of file
diff --git a/src/send_and_confirm.rs b/src/send_and_confirm.rs
index b18eb3e8..6d0a3e84 100644
--- a/src/send_and_confirm.rs
+++ b/src/send_and_confirm.rs
@@ -94,7 +94,7 @@ impl Miner {
         // Submit tx
         let mut attempts = 0;
         loop {
-            progress_bar.set_message(format!("Submitting transaction... (attempt {})", attempts));
+            progress_bar.set_message(format!("Submitting transaction... (attempt {}, max {})", attempts, GATEWAY_RETRIES));
             match client.send_transaction_with_config(&tx, send_cfg).await {
                 Ok(sig) => {
                     // Skip confirmation