The Rear edge of the front fenders on my 1987 IROC are out of adjustment. The specs in the 87 Camaro Shop Manual show 0 to 1.5mm to the front edge of the Door. Mine are out about 6.5mm(1/4 inch) I don't think it has been hit but I did bump the center of the lower panel (ground effect) enough to need touch up while loading it on a trailer. Is there an easy and best way to adjust them without a lot of disassembly??