About a month ago I had noticed my seal from my driveshaft into my transfer case starting to leak. Nothing big yet so i left it. Today i was driving and there was a vibration at all speed and if i accelerated. not a big vibration but enough to piss a guy off. Got home from work checked the whole front end nothing wrong there. Checked this seal and it was starting to get worse. Checked u-joints by doing wiggle test no play. Jacked the back end up and put the truck in drive and it looks like my driveshaft is bent, it wobbles up and down. I have absolutly no clue how i could have bent it and dont believe it is bent but my question for you is if i have a siezed u joint will it make it look bent? Im going to take the driveshaft off on fri but i just want to know if anyone else has had this problem.