diff --git a/src/main/js/plugins/drone/blocktype.js b/src/main/js/plugins/drone/blocktype.js
index 1a2c21e..7710381 100644
--- a/src/main/js/plugins/drone/blocktype.js
+++ b/src/main/js/plugins/drone/blocktype.js
@@ -326,7 +326,7 @@ for ( c in bitmaps.raw ) {
     }
   }
 }
-function blocktype( message, fg, bg ) {
+function blocktype( message, fg, bg, immediate ) {
 
   var bmfg,
     bmbg,
@@ -373,7 +373,7 @@ function blocktype( message, fg, bg ) {
       charWidth = bits.width;
 
       if ( typeof bg != 'undefined' ) {
-        this.cuboidX( bmbg[0], bmbg[1], charWidth, 7, 1 );
+        this.cuboidX( bmbg[0], bmbg[1], charWidth, 7, 1 , immediate);
       }
 
       for ( j = 0; j < bits.pixels.length; j++ ) {
@@ -381,7 +381,7 @@ function blocktype( message, fg, bg ) {
         this.chkpt( 'btbl' );
         x = bits.pixels[ j ][ 0 ];
         y = bits.pixels[ j ][ 1] ;
-        this.up( 6 - y ).right( x ).cuboidX( bmfg[ 0 ], bmfg[ 1 ] );
+        this.up( 6 - y ).right( x ).cuboidX( bmfg[ 0 ], bmfg[ 1 ], 1, 1, 1, immediate);
         this.move( 'btbl' );
 
       }
diff --git a/src/main/js/plugins/drone/contrib/lcd-clock.js b/src/main/js/plugins/drone/contrib/lcd-clock.js
index 34baa9e..0cfd769 100644
--- a/src/main/js/plugins/drone/contrib/lcd-clock.js
+++ b/src/main/js/plugins/drone/contrib/lcd-clock.js
@@ -33,15 +33,28 @@ exports.LCDClock = function(drone, fgColor,bgColor,border) {
     // updating all 4 digits each time is expensive
     // only update digits which have changed (in most cases - just 1)
     //
-    if (digits[3] != lastSecs[3])
-      drone.right(14).blocktype(''+digits[3],fgColor,bgColor).left(14);
-    if (digits[2] != lastSecs[2])
-      drone.right(10).blocktype(''+digits[2],fgColor,bgColor).left(10);
-    if (digits[1] != lastSecs[1])
-      drone.right(4).blocktype(''+digits[1], fgColor, bgColor).left(4);
-    if (digits[0] != lastSecs[0])
-      drone.blocktype(''+digits[0], fgColor, bgColor);
-
+    if (digits[3] != lastSecs[3]){
+      drone
+	.right(14)
+	.blocktype(''+digits[3],fgColor,bgColor, true)
+	.left(14);
+    }
+    if (digits[2] != lastSecs[2]){
+      drone
+	.right(10)
+	.blocktype(''+digits[2],fgColor,bgColor, true)
+	.left(10);
+    }
+    if (digits[1] != lastSecs[1]){
+      drone
+	.right(4)
+	.blocktype(''+digits[1], fgColor, bgColor, true)
+	.left(4);
+    }
+    if (digits[0] != lastSecs[0]){
+      drone
+	.blocktype(''+digits[0], fgColor, bgColor, true);
+    }
     lastSecs[0] = digits[0];
     lastSecs[1] = digits[1];
     lastSecs[2] = digits[2];
@@ -58,7 +71,7 @@ exports.LCDClock = function(drone, fgColor,bgColor,border) {
     drone.box(border,21,9,1);
     drone.up().right();
   }
-  drone.blocktype('00:00', fgColor, bgColor);
+  drone.blocktype('00:00', fgColor, bgColor, true);
   return { 
     start24: function( ) {
       function tick() {
diff --git a/src/main/js/plugins/drone/drone.js b/src/main/js/plugins/drone/drone.js
index d66c7e8..5ceb569 100644
--- a/src/main/js/plugins/drone/drone.js
+++ b/src/main/js/plugins/drone/drone.js
@@ -711,24 +711,23 @@ Drone.prototype.cuboidX = function( blockType, meta, w, h, d, immediate ) {
 Drone.prototype.then = function( next ){
   getQueue(this).push( next.bind( Drone.clone(this) ) );
 };
-Drone.prototype.cuboid = function( block, w, h, d ) {
+Drone.prototype.cuboid = function( block, w, h, d, immediate ) {
   var bm = this._getBlockIdAndMeta( block );
-  return this.cuboidX( bm[0], bm[1], w, h, d );
+  return this.cuboidX( bm[0], bm[1], w, h, d, immediate);
 };
 
-Drone.prototype.cuboid0 = function( block, w, h, d ) {
-  this.chkpt( 'start_point' );
-  
-  // Front wall
-  this.cuboid( block, w, h, 1 );
-  // Left wall
-  this.cuboid( block, 1, h, d );
-  // Right wall
-  this.right( w - 1 ).cuboid( block, 1, h, d ).left( w - 1 );
-  // Back wall
-  this.fwd( d - 1 ).cuboid( block, w, h, 1 );
-  
-  return this.move( 'start_point' );
+Drone.prototype.cuboid0 = function( block, w, h, d, immediate ) {
+  var start = 'cuboid0' + w + h + d + immediate;
+  this
+    .chkpt( start )
+    .cuboid( block, w, h, 1, immediate ) // Front wall
+    .cuboid( block, 1, h, d, immediate ) // Left wall
+    .right( w - 1 )
+    .cuboid( block, 1, h, d, immediate ) // Right wall
+    .left( w - 1 )
+    .fwd( d - 1 )
+    .cuboid( block, w, h, 1, immediate ) // Back wall
+    .move( start );
 };
 
 
diff --git a/src/main/js/plugins/drone/ladder.js b/src/main/js/plugins/drone/ladder.js
index 78ef5e0..6e29116 100644
--- a/src/main/js/plugins/drone/ladder.js
+++ b/src/main/js/plugins/drone/ladder.js
@@ -31,11 +31,11 @@ function ladder( height ){
   this.then(function ladderLater(){
     var block = this.getBlock();
     if (block.typeId == blocks.air || block.typeId == blocks.ladder){
-      this.box(blocks.ladder, 1, height, 1);
+      this.box(blocks.ladder, 1, height, 1, true);
     } else {
       this
 	.back()
-	.box(blocks.ladder, 1, height, 1)
+	.box(blocks.ladder, 1, height, 1, true)
 	.fwd();
     }
   });