Does anyone else have drive line problems on their K5? I have 6" suspension lift on my Blazer and after that. I was blowing u joints left and right. Wouldnt even last a couple of months. Dropped the T case. That didnt really help. Then we shimmed the 12 bolt a bit. That didnt so to help. Finally I converted the rear drive line to a CV joint. This helps but I still eat The joints in about 4-6 months. A couple of the shops here said. "It's just how it is with a Blazer and 39" tires and that much lift." Can anyone shed some light on this?