ok so last year my u joints went bad on my rear drive shaft. when they went and locked up my tail shaft broke on my tcase. i got a new tcase and instald it. a week later the truck went to shaking like crazy and before i could pull over the drive shaft came out and broke the tail end of the tranny. all the way around. like it had a 3 inch gap all the way around the tail end. my buddie told me that it had something lock up got a new tranny put it in. last weekend my 4 wheel drive wouldnt work without making a real load poping noise coming from the front end. i crawled under to check everthing out and saw fluid come from tcase and trany where they meet. i pulled it all apart and it has take a 5 inch peice of tranny mount where the tcase bolts up and broke it off. wat would make this keep happening?