I’m installing a hitch receiver on our 2016 Pilot using the factory supplied weld nuts, already in the frame rails. The supplied bolts are 14 - 1.5 thread. They turn very hard and even seem to jam. I tried a 14 - 2.0 bolt and it doesn’t even start. I don’t know if it’s rust in the threads, or a different thread pitch. Before I run a tap in there to clean it up, I’d like to confirm the thread size. Anyone know for sure?