Hi @MabonBaladevaKain, on my main profile (@kriblo), you asked me for help with your project (link above). You asked me how I would code such a project. This is it. Look at the sprite 'kriblo' inside. I have left your sprites in place, but inactivated the scripts.
@MabonBaladevaKain's original instructions: Use mouse and left click drag to create left and right rows of zipper teeth. Then Up and Down keys to Zip. Make sure the zipper tab is touching the zipper teeth. I need help to make this better please.