So I went to get a hitch installed at Uhaul. 2014 Acura MDX. A couple of the bolt holes apparently have enough rust on the threads that the place won't touch it afraid they'll strip the threads in the holes. Local mecahnic says to get it welded but Ican't find anyone that does that. Another place says they'll drill out the holes and bolt it from the top (through bolt it I assume they mean, but not really sure). Dealer might be able to do it, but it costs an arm and a leg. I'm in MN. Anyone have a suggestion?