I often feel like removing old mylar is a lose-lose situation. We've got lots of machines from the 80's with cloudy mylar, and removal really is hard on the art. I just totally ruined a Pinbot last month trying to get the mylar off. Everything went fine until the 5X5 grid, then...ouch. They make a decal for it, luckily. But there's a lot of other games that do not have decals or overlays. So, you end up with a pin that just looks dirty and musty with clouded mylar, or a pin with major re-touch, due to half the art coming off. I would kill for a good solution to this.