Hi there. Here is a breakdown of what I'm up against. In 2wd, drive engaged it will move with foot off brake. In 4wd it will not move unless throttle is applied. Fluids in front diff and planetaries have no metal, driveshaft was then removed. Same result, wont move in 4wd without giving it throttle. Any clues? I just started playing with this and would like to fix it on my own(with anyones HELP!!!)...lol.