diff --git a/chameleonic.p8 b/chameleonic.p8
index d4f9d99..2863aca 100644
--- a/chameleonic.p8
+++ b/chameleonic.p8
@@ -586,7 +586,6 @@ function rope:_make_consistent()
   )
 
   if #self.latch.rec.todo==0 then
-   self:_tidy_up_gen()
    for i=0,#self.ancs do
     local a0=self:_anc(i)
     local a1=self:_anc(i+1)
@@ -676,23 +675,25 @@ function rope:drag(
  i,x,y
 )
  local anc=self:_anc(i())
- for x,y in self:_rast(
-  anc.x,anc.y,x,y
+ local busy=self:busy()
+
+ for x,y in self:_rastn(
+  anc.x,anc.y,x,y,2,2
  ) do
   local a=self:_anc(i())
-  if not (_point_eq(a, {x=x,y=y})) then
+  if not (_point_eq(a,{x=x,y=y})) then
    a.x=x
    a.y=y
    a.dirty=true
-   self:_tidy_up_gen()
+   self.dirty=true
+   if (not busy) self:_tidy_up_gen()
   end
  end
 end
 
 function rope:_tidy_up_gen()
- if (self:busy()) return
-
  if (self.under_destruction) return
+ if (not self.dirty) return
 
  local settled=true
  local touched={}
@@ -744,13 +745,13 @@ function rope:_tidy_up_gen()
 
   for a=0,#self.ancs+1,1 do
    local anc=self:_anc(a)
-   if anc.seen then 
-    anc.dirty=anc.changed
-   end
+   if (anc.seen) anc.dirty=anc.changed
   end
 
   if (settled) break
  end
+
+ self.dirty=false
 end
 
 function rope:_find_needed_anchors(i)
@@ -861,7 +862,7 @@ function rope:_can_move_midpoint(a0,a1_0,a1_1,a2)
  if not self:_can_stretch(a1_1,a2) then
   return false
  end
- for x,y in self:_rastm(a1_0.x,a1_0.y,a1_1.x,a1_1.y) do
+ for x,y in self:_rastn(a1_0.x,a1_0.y,a1_1.x,a1_1.y,8,8) do
   local tm={x=x,y=y}
   if not self:_can_stretch(a0,tm) then
    return false
@@ -936,7 +937,7 @@ function rope:_can_stretch(
  if (level:pcoll(p2.x,p2.y)) return false
 
  local res=true
- for x,y in self:_rastm(p1.x,p1.y,p2.x,p2.y) do
+ for x,y in self:_rastn(p1.x,p1.y,p2.x,p2.y,8,8) do
   if level:pcoll(x,y) then
    res=false
    break
@@ -946,8 +947,8 @@ function rope:_can_stretch(
  return res
 end
 
-function rope:_rastm(
- x0,y0,x1,y1
+function rope:_rastn(
+ x0,y0,x1,y1,dx,dy
 )
  -- todo: more optimized implementation?
  local iter=self:_rast(x0,y0,x1,y1)
@@ -960,8 +961,8 @@ function rope:_rastm(
 
    if (x==nil) done=true return x1, y1
 
-   local x8 = x\8
-   local y8 = y\8
+   local x8 = x\dx
+   local y8 = y\dy
    if not (x8==prevx and y8==prevy) then 
     prevx,prevy=x8,y8
     return x,y
@@ -1080,6 +1081,7 @@ function rope:_tug()
       if force or not level:pcoll(x,y) then
        s.x=x
        s.y=y
+       self.dirty=true
       end
       return true
      end}
@@ -1132,6 +1134,8 @@ function rope:_tug()
     mx0,my0,
     dmx,dmy
    ) 
+   -- be busy for 4 ticks while the crate moves
+   self:_anc(0).todo={{},{},{},{}}
   end
  end
 end