Ok. I stepped outside the box and listened to the utube. I don’t watch that often but I was wondering about spring archs. The truck was 3” difference in wheelbase side to side. One side had a sheared bolt in the spring pack and was ahead. The other side was farmer loaded and sagged right out so it was back from center. The bolt was an easy fix. The arch was too! I nailed it first shot. Will it last? Probably because the box doesn’t weigh anything. I removed 3 of the 11 leafs too. This was made to carry an ambulance body. Slightly heavier than a 52 box!