diff --git a/build/params.go b/build/params.go
index cb92ec62d..6743b7b01 100644
--- a/build/params.go
+++ b/build/params.go
@@ -36,7 +36,7 @@ const BlockDelay = 6
 const AllowableClockDrift = BlockDelay * 2
 
 // Blocks
-const ForkLengthThreshold = 20
+const ForkLengthThreshold = 100
 
 // /////
 // Proofs / Mining
diff --git a/chain/gen/gen.go b/chain/gen/gen.go
index 987421e31..5cee19efb 100644
--- a/chain/gen/gen.go
+++ b/chain/gen/gen.go
@@ -31,7 +31,7 @@ import (
 
 var log = logging.Logger("gen")
 
-const msgsPerBlock = 5
+const msgsPerBlock = 20
 
 type ChainGen struct {
 	accounts []address.Address
@@ -141,7 +141,6 @@ func NewGenerator() (*ChainGen, error) {
 	if err != nil {
 		return nil, xerrors.Errorf("make genesis block failed: %w", err)
 	}
-	fmt.Println("MINER CFG ADDRESSES: ", minercfg.MinerAddrs)
 
 	cs := store.NewChainStore(bs, ds)
 
diff --git a/chain/sync.go b/chain/sync.go
index fc0826dec..fc2ac38e8 100644
--- a/chain/sync.go
+++ b/chain/sync.go
@@ -643,7 +643,7 @@ loop:
 }
 
 func (syncer *Syncer) syncFork(ctx context.Context, from *types.TipSet, to *types.TipSet) ([]*types.TipSet, error) {
-	tips, err := syncer.Bsync.GetBlocks(ctx, from.Parents(), 100)
+	tips, err := syncer.Bsync.GetBlocks(ctx, from.Parents(), build.ForkLengthThreshold)
 	if err != nil {
 		return nil, err
 	}