My FlashForge Creator Pro came with some of these platform stickers (http://www.flashforge-usa.com/shop/p...rint-tape.html) and the first one worked pretty well for a while, but eventually it tore while I was removing a print. So I removed the sticker (which was quite difficult), and now my print bed is covered in sticky residue. I've spent about an hour using elbow grease and acetone to try to clean it, and I'm about 1/3 done at best. Any suggestions for how to get it clean? This is not a process I want to repeat.