hey i was wondering what is wrong with my truck or maybe its just a normal lifted truck deal. My k5 has a 4" lift, i lowere the tcase w/ the spacers that are already on the tcase cross member but about ever 3000miles i have to changed out my rear ujoints, the one that gets completely destroyed is the one that connects the driveshaft to the pumpkin. The one that connects to the yoke is usually ok but i change it anyways. Is this normal? I plan on going to a 6" lift soon so what will i have to do to not have to change them every 3000miles?