diff --git a/core/chains/evm/config/toml/defaults/Kava_Mainnet.toml b/core/chains/evm/config/toml/defaults/Kava_Mainnet.toml
index 358ee0384af..e0f9522d7d0 100644
--- a/core/chains/evm/config/toml/defaults/Kava_Mainnet.toml
+++ b/core/chains/evm/config/toml/defaults/Kava_Mainnet.toml
@@ -1,10 +1,11 @@
 ChainID = '2222'
 FinalityDepth = 1
 LogPollInterval = '6s'
-NoNewHeadsThreshold = '40s'
+NoNewHeadsThreshold = '1m'
 MinIncomingConfirmations = 1
 
 [GasEstimator]
+Mode = 'L2Suggested'
 EIP1559DynamicFees = false
 PriceMin = '1 wei'
 BumpMin = '100 wei'
@@ -15,9 +16,6 @@ BlockHistorySize = 24
 [Transactions]
 ResendAfterThreshold = '30s'
 
-[HeadTracker]
-HistoryDepth = 400
-
 [NodePool]
 SyncThreshold = 10
 
diff --git a/core/chains/evm/config/toml/defaults/Kava_Testnet.toml b/core/chains/evm/config/toml/defaults/Kava_Testnet.toml
index 419b1c6cbd3..55294fe4a7f 100644
--- a/core/chains/evm/config/toml/defaults/Kava_Testnet.toml
+++ b/core/chains/evm/config/toml/defaults/Kava_Testnet.toml
@@ -1,10 +1,11 @@
 ChainID = '2221'
 FinalityDepth = 1
 LogPollInterval = '6s'
-NoNewHeadsThreshold = '40s'
+NoNewHeadsThreshold = '1m'
 MinIncomingConfirmations = 1
 
 [GasEstimator]
+Mode = 'L2Suggested'
 EIP1559DynamicFees = false
 PriceMin = '1 wei'
 BumpMin = '100 wei'
@@ -15,9 +16,6 @@ BlockHistorySize = 24
 [Transactions]
 ResendAfterThreshold = '30s'
 
-[HeadTracker]
-HistoryDepth = 400
-
 [NodePool]
 SyncThreshold = 10