Need help please. Using white Flex 123 heat press vinyl. (This stuff can be used with a lower heat setting) Anyways, my problem is that I can't see my cut lines. Cigarette ashes seem to be the only thing I've found that lets me see the cutlines but that's a mess and smells. I've tried regular blackboard chalk, and carpenter's chalk. The problem with carpenter's chalk (besides it's permanent) is that when I brush it on some of my detail pops up. This HPV has minimal stickyness - so when you press the piece back down it won't stick because you've gotten chalk on it. Arrrrgghhhh! Any suggestions? I've also tried a lightbox but this stuff is thick. Think I'll stick with the easy weed but would really like to use up this stuff since I already have it.