Sorry for the delay, I've not had the truck in almost a month. 7 wheels were replaced, 6 tires were replaced before changing brands from Toyo to Nitto. All the wheels/tires and now showing they are good and don't require any weights at all. The owner of the shop even took them to another shop to use another machine just to check that off as well. The driveshaft has been balanced and the shop "checked the rear end" and it showed true, yet issue is still ongoing. The wheel hub surfaces are flat with no washer on lugs. The truck still shakes at the same speed, about 65-80 or so, as well as at a lower speed you can feel the truck jumping or hopping at maybe 15-30 mph or so. The only other thing I can think of is maybe torque converter? As I've read that a lot but I thought that was more of a 6.2 issue. Any other advice? This does not make any sense to me....