Here's a good one for you MMF gurus: Let's say I want to create an enemy which is, say, 40x40 pixels, but I want the collision detection to only detect it as being, say, 32x32 pixels. Basically, I need to make an enemy which is 40x40 able to walk through a space that is only 32 pixels high. It would have to work even when there are more than one of these enemies on the screen. Maybe all I need to do is attach two objects together but usually when I have attempted that with multiple copies of the same object on the playfield at once, it's just been a disaster. Any advice?