diff --git a/cmd/harmony/main.go b/cmd/harmony/main.go
index 4fbccb253..fd5dd7e04 100644
--- a/cmd/harmony/main.go
+++ b/cmd/harmony/main.go
@@ -101,7 +101,7 @@ var (
 	// beaconSyncFreq indicates beaconchain sync frequency
 	beaconSyncFreq = flag.Int("beacon_sync_freq", 60, "unit in seconds")
 	// blockPeriod indicates the how long the leader waits to propose a new block.
-	blockPeriod    = flag.Int("block_period", 2, "how long in second the leader waits to propose a new block.")
+	blockPeriod    = flag.Int("block_period", 8, "how long in second the leader waits to propose a new block.")
 	leaderOverride = flag.Bool("leader_override", false, "true means override the default leader role and acts as validator")
 	// shardID indicates the shard ID of this node
 	shardID            = flag.Int("shard_id", -1, "the shard ID of this node")
diff --git a/core/blockchain.go b/core/blockchain.go
index 9edac1b04..892cccbac 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -2408,11 +2408,7 @@ func (bc *BlockChain) UpdateValidatorVotingPower(state shard.State) error {
 
 	for _, committee := range state {
 		for _, slot := range committee.Slots {
-			utils.Logger().Print("TTTTTTT")
-			utils.Logger().Print(committee.ShardID)
 			if slot.TotalStake != nil {
-				utils.Logger().Print("AAAAAA")
-				utils.Logger().Print(slot.TotalStake)
 				if _, ok := addrToEffectiveStakes[slot.EcdsaAddress]; !ok {
 					addrToEffectiveStakes[slot.EcdsaAddress] = map[uint32]numeric.Dec{}
 				}
@@ -2425,9 +2421,6 @@ func (bc *BlockChain) UpdateValidatorVotingPower(state shard.State) error {
 					totalEffectiveStake[committee.ShardID] = numeric.NewDec(0)
 				}
 				totalEffectiveStake[committee.ShardID] = totalEffectiveStake[committee.ShardID].Add(*slot.TotalStake)
-				utils.Logger().Print("BBBBBB")
-				utils.Logger().Print(totalEffectiveStake[committee.ShardID])
-				utils.Logger().Print(addrToEffectiveStakes[slot.EcdsaAddress][committee.ShardID])
 			}
 		}
 	}
@@ -2440,9 +2433,6 @@ func (bc *BlockChain) UpdateValidatorVotingPower(state shard.State) error {
 			addrTotalVotingPower = addrTotalVotingPower.Add(eStake.Quo(totalEffectiveStake[shardID]))
 			addrTotalEffectiveStake = addrTotalEffectiveStake.Add(eStake)
 		}
-		utils.Logger().Print("CCCCCCC")
-		utils.Logger().Print(addrTotalVotingPower)
-		utils.Logger().Print(addrTotalEffectiveStake)
 		// Retrieve the stats and update
 		stats, err := rawdb.ReadValidatorStats(bc.db, addr)
 		if stats == nil {
diff --git a/node/node_handler.go b/node/node_handler.go
index 335178607..edd022926 100644
--- a/node/node_handler.go
+++ b/node/node_handler.go
@@ -386,8 +386,6 @@ func (node *Node) PostConsensusProcessing(newBlock *types.Block, commitSigAndBit
 	// Update voting power of validators for all shards
 	if len(newBlock.Header().ShardState()) > 0 {
 		shardState := shard.State{}
-		utils.Logger().Print("XXXXXXXX")
-		utils.Logger().Print(shardState.JSON())
 		if err := rlp.DecodeBytes(newBlock.Header().ShardState(), &shardState); err == nil {
 			if err = node.Blockchain().UpdateValidatorVotingPower(shardState); err != nil {
 				utils.Logger().Err(err)