i just put a rough country 7.5 knuckle on my 15 half ton and have noise coming from the rack. note i did not drop the rack for the install. just pulled my tandem hauler home and the noise got even worse. everything is torqued and installed correctly. anyone else having problems with this? called RC and they said this was the 1st case they had heard of, but thankfully they are helping me fix the issue. also have aluminum arms if that matters. any input or heard anyone else with problems??