My 2010 had two sets of holes in the spring hanger and was set in the top and lowered to the bottom. Run me around $400 but the EquiFlex was cracked on both sides and had to be replaced. The manager tried to get manufacturer, Lippert I think to replace them, but of course not. They bolts were replaced with wet bolts and bushings replaced with Never Fail or something of the sort. The fiver was 3 years old.
I was kind of perturbed at the time it was taking but the shop was trying to get the EquiFlex replaced buy manufacturer. Looking back I am glad things worked at the way they did.
Although I trust this shop, something I don't trust about welding.
Not a shot at welders, just my thing.