diff --git a/chain/events/tscache.go b/chain/events/tscache.go
index 33493a4b8..a0d85e6e2 100644
--- a/chain/events/tscache.go
+++ b/chain/events/tscache.go
@@ -70,13 +70,14 @@ func (tsc *tipSetCache) get(height uint64) (*types.TipSet, error) {
 		return nil, xerrors.Errorf("tipSetCache.get: requested tipset not in cache (req: %d, cache head: %d)", height, headH)
 	}
 
-	tailH := tsc.cache[(tsc.start-tsc.len+1)%len(tsc.cache)].Height()
+	clen := len(tsc.cache)
+	tailH := tsc.cache[((tsc.start-tsc.len+1)% clen + clen) % clen].Height()
 
 	if height < tailH {
 		return tsc.storage(context.TODO(), height, tsc.cache[tailH])
 	}
 
-	return tsc.cache[int(height-tailH+1)%len(tsc.cache)], nil
+	return tsc.cache[(int(height-tailH+1) % clen + clen) % clen], nil
 }
 
 func (tsc *tipSetCache) best() *types.TipSet {
diff --git a/lotuspond/front/src/Address.js b/lotuspond/front/src/Address.js
index b41f3cdcb..64984716d 100644
--- a/lotuspond/front/src/Address.js
+++ b/lotuspond/front/src/Address.js
@@ -84,16 +84,16 @@ class Address extends React.Component {
     return info
   }
 
-  add10k = async () => {
-    [...Array(10).keys()].map(() => async () => await this.props.add1k(this.props.addr)).reduce(async (p, c) => [await p, await c()], Promise.resolve(null))
+  add200k = async () => {
+    [...Array(10).keys()].map(() => async () => await this.props.add20k(this.props.addr)).reduce(async (p, c) => [await p, await c()], Promise.resolve(null))
   }
 
   render() {
-    let add1k = <span/>
-    if(this.props.add1k) {
-      add1k = <span>&nbsp;<a href="#" onClick={() => this.props.add1k(this.props.addr)}>[+1k]</a></span>
+    let add20k = <span/>
+    if(this.props.add20k) {
+      add20k = <span>&nbsp;<a href="#" onClick={() => this.props.add20k(this.props.addr)}>[+20k]</a></span>
       if (this.props.add10k) {
-        add1k = <span>{add1k}&nbsp;<a href="#" onClick={this.add10k}>[+10k]</a></span>
+        add20k = <span>{add20k}&nbsp;<a href="#" onClick={this.add200k}>[+200k]</a></span>
       }
     }
     let addr = truncAddr(this.props.addr, this.props.short ? 12 : 17)
@@ -133,7 +133,7 @@ class Address extends React.Component {
       minerInfo = <span>&nbsp;Power: {this.state.minerInfo.MinerPower} ({this.state.minerInfo.MinerPower/this.state.minerInfo.TotalPower*100}%)</span>
     }
 
-    return <span>{addr}{balance}{actInfo}{nonce}{add1k}{transfer}{minerInfo}</span>
+    return <span>{addr}{balance}{actInfo}{nonce}{add20k}{transfer}{minerInfo}</span>
   }
 }
 
diff --git a/lotuspond/front/src/FullNode.js b/lotuspond/front/src/FullNode.js
index edf620579..29a805273 100644
--- a/lotuspond/front/src/FullNode.js
+++ b/lotuspond/front/src/FullNode.js
@@ -15,7 +15,7 @@ class FullNode extends React.Component {
     this.newSecpAddr = this.newSecpAddr.bind(this)
     this.newBLSAddr = this.newBLSAddr.bind(this)
     this.startStorageMiner = this.startStorageMiner.bind(this)
-    this.add1k = this.add1k.bind(this)
+    this.add20k = this.add20k.bind(this)
     this.explorer = this.explorer.bind(this)
     this.client = this.client.bind(this)
     this.stop = this.stop.bind(this)
@@ -84,8 +84,8 @@ class FullNode extends React.Component {
     this.props.spawnStorageNode(this.props.node.Repo, this.props.client)
   }
 
-  async add1k(to) {
-    await this.props.give1k(to)
+  async add20k(to) {
+    await this.props.give20k(to)
   }
 
   explorer() {
@@ -123,14 +123,14 @@ class FullNode extends React.Component {
       let storageMine = <a href="#" onClick={this.startStorageMiner} hidden={!this.props.spawnStorageNode}>[Spawn Storage Miner]</a>
 
       let addresses = this.state.addrs.map((addr) => {
-        let line = <Address client={this.props.client} add1k={this.add1k} add10k={true} nonce={true} addr={addr} mountWindow={this.props.mountWindow}/>
+        let line = <Address client={this.props.client} add20k={this.add20k} add10k={true} nonce={true} addr={addr} mountWindow={this.props.mountWindow}/>
         if (this.state.defaultAddr === addr) {
           line = <b>{line}</b>
         }
         return <div key={addr}>{line}</div>
       })
       let paychannels = this.state.paychs.map((addr, ak) => {
-        const line = <Address client={this.props.client} add1k={this.add1k} add10k={true} addr={addr} mountWindow={this.props.mountWindow}/>
+        const line = <Address client={this.props.client} add20k={this.add20k} add10k={true} addr={addr} mountWindow={this.props.mountWindow}/>
         const vouchers = this.state.vouchers[ak].map(voucher => {
           let extra = <span></span>
           if(voucher.Extra) {
diff --git a/lotuspond/front/src/NodeList.js b/lotuspond/front/src/NodeList.js
index 093a336c4..0466a5eb9 100644
--- a/lotuspond/front/src/NodeList.js
+++ b/lotuspond/front/src/NodeList.js
@@ -27,7 +27,7 @@ class NodeList extends React.Component {
     this.spawnStorageNode = this.spawnStorageNode.bind(this)
     this.connMgr = this.connMgr.bind(this)
     this.consensus = this.consensus.bind(this)
-    this.transfer1kFrom1 = this.transfer1kFrom1.bind(this)
+    this.transfer20kFrom1 = this.transfer20kFrom1.bind(this)
 
     this.getNodes()
   }
@@ -52,7 +52,7 @@ class NodeList extends React.Component {
                       node={{...node}}
                       client={client}
                       pondClient={this.props.client}
-                      give1k={this.transfer1kFrom1}
+                      give20k={this.transfer20kFrom1}
                       mountWindow={this.props.mountWindow}
                       spawnStorageNode={this.spawnStorageNode}
                       stop={this.stopNode(node.ID, onClose)}
@@ -81,7 +81,7 @@ class NodeList extends React.Component {
     this.setState({existingLoaded: true, nodes: nodes})
   }
 
-  async transfer1kFrom1(to) {
+  async transfer20kFrom1(to) {
     const addrss = await this.state.nodes[1].conn.call('Filecoin.WalletList', [])
     const [bestaddr, bal] = await addrss.map(async addr => {
       let balance = 0
@@ -96,7 +96,7 @@ class NodeList extends React.Component {
     await pushMessage(this.state.nodes[1].conn, bestaddr, {
       To: to,
       From: bestaddr,
-      Value: "1000",
+      Value: "20000",
     })
   }
 
diff --git a/storage/miner.go b/storage/miner.go
index 7642b426a..2e07701bc 100644
--- a/storage/miner.go
+++ b/storage/miner.go
@@ -194,7 +194,7 @@ func (m *Miner) schedulePoSt(ctx context.Context, baseTs *types.TipSet) {
 	m.schedLk.Lock()
 
 	if m.postSched >= ppe {
-		log.Warn("schedulePoSt already called for proving period >= %d", m.postSched)
+		log.Warnf("schedulePoSt already called for proving period >= %d", m.postSched)
 		m.schedLk.Unlock()
 		return
 	}