[elitecustombody]

Not sure where the problem area is, but is sounds like on the actual edge where inner wheelwell is welded with outer quarter panel skin. If that is the area, mask off against overspray, spray some etching primer ,if there should be seam sealer, apply seam sealer,then apply paint followed by clearcoat. I like Sherwin Willams GBP988 etching primer in aerosol can, been using it for 6-8 years ,seems to work much better than U-pol I used before.