I removed the factory stock u-joints from my Crew Cabs front drive shaft over the weekend. I melted out the factory injection molded plastic that holds the u-joints in, and then used my brand new 20-ton press I bought from Harbor Freight to remove the u-joints. That press worked like a dream. One of the reasons I removed the old u-joints is that I need to clearance grind the front drive shaft double cardan joint because of the 9" of lift my truck has. The problem I am having is the centering ball and seal. The centering ball is completely seized to the nipple that the centering ball seats into with the needle bearings. I have tried soaking it down with penetrating oil, grabbing it with a set of locking pliers and pulling it off, and I have tried heating it up with a torch and it still will not come off. I can get it off, but I would have to carefully cut it off with an angle grinder, and then file down the nipple that the ball seat nipple as best as I can. My question is this drive shaft screwed because of this, or can I use the drive shaft even if the ball centering nipple has to be filed back close to as good as I can get it...even if it is not a perfect fit down to the thousands of an inch? The drive shaft centering ball nipple that I am referring to.