Gonzo,
Are you rubbing at the outside edge of the rear of the front fender or on the inside of the fender well itself? Mine is acutally rubbing inside the fender well & not on the outer edge (there are pix in my gallery of the trimming done on the outside edge of my fenders to allow running 33's with lotsa offset).
Rubbing on the outside is fairly easily taken care of with BFH & tin snips. Deep in the wheel well requires more inventive modifications.
Tom