Hi Daniel,
I had somewhat similar problem with my recent project of Pepsi Concorde, i had painted Trimclad white on the wings about a year ago, now few weeks back i clear coated it with Future and then disaster struck!, once future dried out it dident gaved to me smooth gloss finish, instead i had rippled matt finish!. After couple days i started to fine sand clear coat with waterie 12000 grit sanding cloth from LMG paint polishing kit, but paint started to crack at 3 different spots and decals started to crack also!. I just couldent belive it!, i kept on sanding it to smooth out cracks and