I think I found the problem of why I'm breaking my u-joints, I went to a welder in my area he balances the shafts I told him the problem that I was having and he looked under my truck and told me that the rear differential is supposed to be adjusted at an angle when the truck is lifted I have a 4" lift but I see that my differential is straight not at an angle is this true? it kinda makes sense to me so the shaft wont be so stressed he told me for $150 he would do the job, is this too hard for me to do, is there any cutting and welding involved, according to him he has to cut something I dont remember what and re-welded back on would this be true or is he trying to rip me off, I understand about the differential that it has to be at an angle to make the shaft less stressed but the price sounds a little high what do you guys think. keep blazin !!!