who's tried GM touch up paint? i posted a while back, my Z has a tiny rock chip in the front bumper. 1/4 inch by 1/2 inch. i have had some people check the car out and most don't even see it. given i can pay $150 and get it professionally blended and fixed at aerocolour, would you do that, or since it's so tiny just use the GM touch up? if using touch up, just apply a tiny bit until it's flattened out. sand down the little chip area first then put the touch up on? little dabs, or a sideways sweep? thanks again guys!