Mine seems slightly more pronounced now. I went back to the dealership and they put me off saying they addressed it, and its likely inherent to the design. I said may be, but it's a flaw. I drove same model truck as mine on the lot, same vibration, to a lesser extent though. However I didn't really notice mine til @1300 miles. Beginning to irritate the $**t out of me. At 20 to 25 mph it feels a lot like riding on buckshot mudders. A new product shouldn't feel rough like that. Its screwing up my enjoyment of an otherwise kickass truck.