SMS decals... expiration date?

Do Scale Motorsport decals go bad? I used some CF on the hood of my FD, but the decals ended up splotchy and inconsistant. Anyone have a similar experience? The problem was exacerbated by clear. Go to my thread on my FD (http://www.automotiveforums.com/vbulletin/showpost.php?p=1559770&postcount=80) to see what I mean. This make me nervous, because I have the template set for the 787B on the way, and I don't want to let $25 of decals sit out if they are going to go bad.

Don't know I'm sorry, but I have heard quite a few people having difficulties with SMS decals lately. Enough to make me worry about their templated decal sets too.

I've never had any problems with SMS decals, which doesn't really indicate anything other than my good fortune I guess.