I hauled a load in the back of the truck for the first time today. It was only about 200 lbs but I was getting a god awful grinding/squeaking noise at random. Seemed worse during right hand curves. On the way home after dropping the load, nothing. No sound at all. I would think u joints but why would right hand curves make the sound worse?? It seems to be coming from an unspecified location under the truck. I thought wheel hub initially but don't feel anything in the steering wheel. Help, lol.