About 5 years ago, my A6 was completely refreshed from 1998 and all parking remplers removed from the previous owner etc., that was done by a paintr. Today I noticed that on a fender the clear varnish has burst off, approx. 2 x 1 cm. How can this be solved cost-effectively? Do I have to go back to the paintr or should I rather go to a SmartRepair operation? Or is this just an optical deficiency, which does not have to be fixed, because there is no rust risk?