diff --git a/api/struct.go b/api/struct.go
index 8276f91f2..1f08f94bd 100644
--- a/api/struct.go
+++ b/api/struct.go
@@ -108,7 +108,7 @@ type FullNodeStruct struct {
 		StateMarketStorageDeal     func(context.Context, uint64, *types.TipSet) (*actors.OnChainDeal, error)                       `perm:"read"`
 		StateLookupID              func(ctx context.Context, addr address.Address, ts *types.TipSet) (address.Address, error)      `perm:"read"`
 		StateChangedActors         func(context.Context, cid.Cid, cid.Cid) (map[string]types.Actor, error)                         `perm:"read"`
-		StateGetReceipt func(context.Context, cid.Cid, *types.TipSet) (*types.MessageReceipt, error) `perm:"read"`
+		StateGetReceipt            func(context.Context, cid.Cid, *types.TipSet) (*types.MessageReceipt, error)                    `perm:"read"`
 
 		MarketEnsureAvailable func(context.Context, address.Address, types.BigInt) error `perm:"sign"`
 
diff --git a/chain/events/utils.go b/chain/events/utils.go
index 13d620da8..630158b13 100644
--- a/chain/events/utils.go
+++ b/chain/events/utils.go
@@ -30,7 +30,7 @@ func (e *calledEvents) CheckMsg(ctx context.Context, msg *types.Message, hnd Cal
 	}
 }
 
-func(e *calledEvents) MatchMsg(inmsg *types.Message) MatchFunc {
+func (e *calledEvents) MatchMsg(inmsg *types.Message) MatchFunc {
 	return func(msg *types.Message) (bool, error) {
 		if msg.From == inmsg.From && msg.Nonce == inmsg.Nonce && !inmsg.Equals(msg) {
 			return false, xerrors.Errorf("matching msg %s from %s, nonce %d: got duplicate origin/nonce msg %s", inmsg.Cid(), inmsg.From, inmsg.Nonce, msg.Nonce)
diff --git a/chain/sync.go b/chain/sync.go
index c28269c65..e1736a24d 100644
--- a/chain/sync.go
+++ b/chain/sync.go
@@ -84,7 +84,7 @@ func NewSyncer(sm *stmgr.StateManager, bsync *blocksync.BlockSync, self peer.ID)
 		sm:      sm,
 		self:    self,
 
-		incoming:  pubsub.New(50),
+		incoming: pubsub.New(50),
 	}
 
 	s.syncmgr = NewSyncManager(s.Sync)
@@ -429,6 +429,10 @@ func (syncer *Syncer) Sync(ctx context.Context, maybeHead *types.TipSet) error {
 		)
 	}
 
+	if syncer.store.GetHeaviestTipSet().ParentWeight().GreaterThan(maybeHead.ParentWeight()) {
+		return nil
+	}
+
 	if syncer.Genesis.Equals(maybeHead) || syncer.store.GetHeaviestTipSet().Equals(maybeHead) {
 		return nil
 	}
diff --git a/cli/sync.go b/cli/sync.go
index b1b4efd0c..533a7bc9f 100644
--- a/cli/sync.go
+++ b/cli/sync.go
@@ -41,14 +41,20 @@ var syncStatusCmd = &cli.Command{
 		for i, ss := range state.ActiveSyncs {
 			fmt.Printf("worker %d:\n", i)
 			var base, target []cid.Cid
+			var heightDiff int64
 			if ss.Base != nil {
 				base = ss.Base.Cids()
+				heightDiff = int64(ss.Base.Height())
 			}
 			if ss.Target != nil {
 				target = ss.Target.Cids()
+				heightDiff = int64(ss.Target.Height()) - heightDiff
+			} else {
+				heightDiff = 0
 			}
 			fmt.Printf("\tBase:\t%s\n", base)
 			fmt.Printf("\tTarget:\t%s\n", target)
+			fmt.Printf("\tHeight diff:\t%d\n", heightDiff)
 			fmt.Printf("\tStage: %s\n", chain.SyncStageString(ss.Stage))
 			fmt.Printf("\tHeight: %d\n", ss.Height)
 		}
diff --git a/cmd/lotus-storage-miner/run.go b/cmd/lotus-storage-miner/run.go
index 9a3944417..735a0d21d 100644
--- a/cmd/lotus-storage-miner/run.go
+++ b/cmd/lotus-storage-miner/run.go
@@ -56,6 +56,10 @@ var runCmd = &cli.Command{
 			return err
 		}
 
+		if v.APIVersion != build.APIVersion {
+			return xerrors.Errorf("lotus-daemon API version doesn't match: local: ", api.Version{APIVersion: build.APIVersion})
+		}
+
 		storageRepoPath := cctx.String(FlagStorageRepo)
 		r, err := repo.NewFS(storageRepoPath)
 		if err != nil {
diff --git a/storage/miner.go b/storage/miner.go
index fe0839467..8c2ebb546 100644
--- a/storage/miner.go
+++ b/storage/miner.go
@@ -55,7 +55,7 @@ type storageMinerApi interface {
 	StateMinerSectors(context.Context, address.Address, *types.TipSet) ([]*api.ChainSectorInfo, error)
 	StateMinerProvingSet(context.Context, address.Address, *types.TipSet) ([]*api.ChainSectorInfo, error)
 	StateMinerSectorSize(context.Context, address.Address, *types.TipSet) (uint64, error)
-	StateWaitMsg(context.Context, cid.Cid) (*api.MsgWait, error)  // TODO: removeme eventually
+	StateWaitMsg(context.Context, cid.Cid) (*api.MsgWait, error) // TODO: removeme eventually
 	StateGetActor(ctx context.Context, actor address.Address, ts *types.TipSet) (*types.Actor, error)
 	StateGetReceipt(context.Context, cid.Cid, *types.TipSet) (*types.MessageReceipt, error)