I never had a wrinkle problem with the old Monokote but I've heard that isn't always true with the recent stuff. My most recent planes have been done with SolarTex/WorldTex. On my Corsair I used plain white SolarTex and sprayed white Monokote Primer to get a fuel proof coat. Then sanded that smooth as metal and sprayed Rustoleum in two different blue colors to get the 3 color Navy/Marine paint scheme. It's a little heavier than just plain Monokote gives a fantastic, metal-like finish. Whatever you use finish it up with Maquires Car Wax. It protects the finish and makes cleanup a snap. I've put it on both the SolarTex and Monokote coverings. And I use Orange cleaner which is pretty heavy duty stuff to clean up fuel residue and it doesn't hurt the finish. Just rewax a couple of times a years.