diff --git a/src/tx-builder/config/index.ts b/src/tx-builder/config/index.ts
index 5135b756..59777280 100644
--- a/src/tx-builder/config/index.ts
+++ b/src/tx-builder/config/index.ts
@@ -10,7 +10,6 @@ import {
 } from '../types';
 
 export const DEFAULT_NULL_VALUE_ON_TX = BigNumber.from(0).toHexString();
-export const POLYGON_DEFAULT_GAS = BigNumber.from('1000000');
 export const DEFAULT_APPROVE_AMOUNT = constants.MaxUint256.toString();
 export const MAX_UINT_AMOUNT =
   '115792089237316195423570985008687907853269984665640564039457584007913129639935';
@@ -157,7 +156,7 @@ export const enabledNetworksByService: EnabledNetworksType = {
     Network.mumbai,
   ],
   faucet: [Network.kovan],
-  liquiditySwapAdapter: [Network.kovan, Network.mainnet],
+  liquiditySwapAdapter: [Network.mainnet, Network.polygon],
   repayWithCollateralAdapter: [Network.kovan, Network.mainnet],
   aaveGovernanceV2: [Network.kovan, Network.mainnet],
   ltaMigrator: [Network.kovan, Network.mainnet],
diff --git a/src/tx-builder/config/v2/addresses.ts b/src/tx-builder/config/v2/addresses.ts
index 463e1d93..d6521bf2 100644
--- a/src/tx-builder/config/v2/addresses.ts
+++ b/src/tx-builder/config/v2/addresses.ts
@@ -50,7 +50,7 @@ export const commonContractAddressBetweenMarketsV2: CommonConfigType = {
     LEND_TO_AAVE_MIGRATOR: '',
     WETH_GATEWAY: '0xbEadf48d62aCC944a06EEaE0A9054A90E5A7dc97',
     FAUCET: '',
-    SWAP_COLLATERAL_ADAPTER: '',
+    SWAP_COLLATERAL_ADAPTER: '0x35784a624D4FfBC3594f4d16fA3801FeF063241c',
     REPAY_WITH_COLLATERAL_ADAPTER: '',
     FLASHLIQUIDATION: '',
     INCENTIVES_CONTROLLER: '0x357d51124f59836ded84c8a1730d72b749d8bc23',
diff --git a/src/tx-builder/utils/gasStation.ts b/src/tx-builder/utils/gasStation.ts
index ddd10c5d..a117c082 100644
--- a/src/tx-builder/utils/gasStation.ts
+++ b/src/tx-builder/utils/gasStation.ts
@@ -1,8 +1,9 @@
 import { BigNumber } from 'ethers';
-import { POLYGON_DEFAULT_GAS } from '../config';
 import { transactionType, Configuration, Network } from '../types';
 
 const DEFAULT_SURPLUS = 30; // 30%
+// polygon gas estimation is very off for some reason
+const POLYGON_SURPLUS = 60; // 60%
 
 export const estimateGas = async (
   tx: transactionType,
@@ -24,7 +25,7 @@ export const estimateGasByNetwork = async (
 
   const { network } = config;
   if (network === Network.polygon) {
-    return POLYGON_DEFAULT_GAS;
+    return estimatedGas.add(estimatedGas.mul(POLYGON_SURPLUS).div(100));
   }
 
   return estimatedGas.add(