Graphic glitch w/ alpha channels.

I am using the following event to scale down objects with alpha channels:

- Number of ( "Object" ) > 0
+ XScale( "Object" )-0.07 (Quality=1)
+ XScale( "Object" )-0.07 (Quality=1)

Problem is every now and then the object leaves trace pixels of itself that are pasted into the background due to resizing. Anyone know why this happens? How to get around it?

I have tried changing the (Quality) to 0, but all this does is let the objects exist longer before glitching up.

heh :P Everytime I make a post on here I seem to figure out the problem within minutes after clicking submit. I had added fade out transitions for the objects, this is what caused them to glitch up after the object was too small.