Hallows together, someone knows how many layers the leaf springs have on the rear axle and are mounted the leaf springs above or below the axle. It is a GMC, Chevrolet c10 pickup, 1/2 l, 5.7 l, year 1979. In my manual there is nothing about the rear axles or the leaf springs (heul). I ask because my predecessor (the hero) probably turned the axle to lay in lower position. Now the axle strikes against the upper boundary rubber or no spring travel. is available . Spin the axle is ok. if you want to lay extremely lower but usually have to be cut out on the frame to restore the rest of the spring path. Unfortunately, I don’t know so well about pickups and would look forward to an answer.