Ok so I'm encountering the same problem on two different projects. Refinishing my Les Paul jr special and a friend's american standard tele. Stripped both to wood. Used a preval and mohawk finisher's choice (70/30 solvent mix) with transtint to get my colors. So far so good. Then, as soon as I do a coat of clear on top using mohawk finisher's choice in a rattle can (easier in my mind than building clear coats w the PITA preval), suddenly the lacquer isn't drying and remains tacky days later. Happened on the Les Paul and now again with the tele neck. Any ideas what could be causing this? I've sprayed the Les Paul with a few applications of blush reducer and that seems to help the tackiness but not fully. Not afraid to strip and start over but don't want to try again until I know what my problem is. Any ideas? Would love to hear some thoughts. I'm baffled.