I am still getting vibrations in my drive shaft after shortening it 3/4 of an inch. Was the stock drive shaft U-Joints phased, or aligned straight? The U-Joints are straight up after shortening, and am wondering if that was incorrect?? I've balanced the drive shaft 3 times, replaced the drive tube with new 3 inch DOM steel, and still have the vibrations starting at 60 mph and getting stronger with higher speeds. The diff is not parallel with the transfer case output. It is 2 degrees off. I am in the process of correcting that by moving the front of the diff down with some adjustable upper trailing arm links from Spohn Performance. But, can 2 degrees make that much difference? That is what is driving this phasing question.