Hello there I have a 1977 cj7. It has a 4 inch lift kit with 35 inch tires. Was wondering what the driveshaft and pinion angle should be. . I keep spitting out u joints. The last time it spit out the yolk and bent it all to hell. I just ran the rubicon trail and made it through alright but when we got back on the road it vibrates like hell. Thanks for any info you can give me. Thanks Kirk