Hey guys, so i have a 2000 tj sport and the last 2 times i tried putting it in 4x4 it pulled the rear driveshaft out and shattered my transfer case, most recent time it popped out and is still in but there is play in the pinion seal and driveshaft is just spinning inside the differential and when i try to drive it sounds like gears grinding and wont even move unless in 4L. i had a mechanic check the gears prior to using it and he said it was 3.73 ratio front and back 41-11 which gave me the impression it was okay to use and i tried getting into my driveway and it just popped out less than a foot away and now im frustrated trying to fix this and figure out what it could be that the previous owner did that caused this multiple times. any help is appreciated and no it is not lifted im running wrangler duratrac tires as is right now. any suggestions?