The paint on the rear spoiler is blistering and peeling off. The car was painted two years ago according to the previous owner. A friend of mine owns a body shop and he thinks the spoiler is expanding and contracting at different rate than the paint. There's an additive he can put in the paint but he doesn't think it's enough to offset the difference. Any suggestions or solutions? I don't want to get it repainted and have it happen again in two years. Thanks, Greg