I'm trying to install a Superhitch F1000 on a my '95 F350. It looks like the slotted holes on the hitch will just barely catch the inside edge of the flange on the frame rail, which will make the holes prone to tearing out. And even then, I'm not sure I will be able to put a socket on the nut or use the 1"x2" reinforcing washer they provide. Anybody had experience with this?