the cvs look good i have not changed them but they feel solid and there are no rips in the boots (they are black prob original) - the green cup seems fine too and i have no play in either axles - the only vibration comes from the steering wheel but i know it is not power steering issues because i have no leaks and when i sit still i can turn the steering wheel and there is no vibration and no sound -when you are driving it sounds like its coming from the front but if you are outside the vx is sounds like its coming from the middle or rear - maybe something wrong with the u joints or the cv that goes to the tcase? ive greased the 3 points on the driveshaft that i could - ive never had differential problems before what would those sound like?

its almost like i have two different problems going on here but they seem related - the on/off grinding and the binding of something causing the car to drop when i let off the brake after i brake hard enough (not unusually hard) it looks like the rear end has to come off to get to the rear diff to service it and the transfer case doesnt look any easier but i still dont know which one would be better to start with or if i should start with either