i bought a motorsport ring and pinion gear set #m-4209-f373n 3.73 for a 8.8 from blue oval industries off ebay. got this back at christmas and now having it installed at the dealership i work for by guys who do this all day. the 3.73 gear holes dont line up the the posi carrier. there are three holes on the ring that no matter how you turn it thoes same three are always off, (the old 3.27 gear fits the new carrier just fine however). the guy at this place told me to send it back and he will check it with what he has in stock, hes prob going to blow me off. what do i do.