I have a question for all of the guys out here who are mechanically inclined. Would it be possible to remove the rear drive shaft put in in 4x4 and drive to eliminate drive shaft and rear end as cause of vibes. If still present, reinstall shaft, then take out front shaft to eliminate front shaft/diff as cause? I'm almost positive this can be done but not sure what you can use in rear of trans to stop spillage of atf and also front of transfer case. Any trans gurus in this thread?