diff --git a/ts/client/scripts/mm/market-maker.ts b/ts/client/scripts/mm/market-maker.ts
index e7175e541..b574adba4 100644
--- a/ts/client/scripts/mm/market-maker.ts
+++ b/ts/client/scripts/mm/market-maker.ts
@@ -468,9 +468,10 @@ async function makeMarketUpdateInstructions(
     ),
   ];
 
-  instructions.push(
-    await client.healthRegionBeginIx(group, mangoAccount, [], [perpMarket]),
-  );
+  // Temporary: Health regions are currently disabled on mainnet for security reasons
+  //instructions.push(
+  //  await client.healthRegionBeginIx(group, mangoAccount, [], [perpMarket]),
+  //);
 
   const expiryTimestamp =
     params.tif !== undefined ? Date.now() / 1000 + params.tif : 0;
@@ -698,9 +699,10 @@ async function makeMarketUpdateInstructions(
     }
   }
 
-  instructions.push(
-    await client.healthRegionEndIx(group, mangoAccount, [], [perpMarket]),
-  );
+  // Temporary: Health regions are currently disabled on mainnet for security reasons
+  //instructions.push(
+  //  await client.healthRegionEndIx(group, mangoAccount, [], [perpMarket]),
+  //);
 
   // If instruction is only the sequence enforcement and health region ixs, then just send empty
   if (instructions.length === 3) {
diff --git a/ts/client/scripts/mm/params/default.json b/ts/client/scripts/mm/params/default.json
index 87a4749c8..19993574d 100644
--- a/ts/client/scripts/mm/params/default.json
+++ b/ts/client/scripts/mm/params/default.json
@@ -5,7 +5,7 @@
   "assets": {
     "BTC": {
       "perp": {
-        "sizePerc": 0.75,
+        "sizePerc": 1,
         "leanCoeff": 0.00025,
         "bias": 0.0,
         "requoteThresh": 0.0002,
@@ -16,7 +16,7 @@
     },
     "SOL": {
       "perp": {
-        "sizePerc": 0.75,
+        "sizePerc": 1,
         "leanCoeff": 0.00025,
         "bias": 0.0,
         "requoteThresh": 0.0002,