Anybody have any idea why i keep blowing out the rear u-joints in my truck????? I just put in a 700 r-4 trans, and now it keeps blowing the joints (going to buy my 3rd set today in a month). The motor is the same as always, SB 350. I never used to have this problem with the t350 trans that came out of it. I have a lift kit, but i dropped the tranny an 1 1/2" to compensate for that.