Been having a problem with my brakes.. this has happened 4 times now. I dont know where to start for a fix. Basicly ive found it only happens after ive been driving for an hour or more. The problem is the brakes start to drag. the first time it was the front passenger side, second time it was the drivers side, third time it was both fronts and today it was the rear passenger side. everytime the truck started to shake when stopping then shook all all the time. then you start to feel the drag. brakes smoke when stopped. today i felt all the wheels and none were hot besides the right rear and like i said was so hot it was smoking. any ideas?