I have a 2015 Chevy Silverado 1/2 ton that I pull a new camper with. It really squats my truck when I hook up so I'm looking to add air bags to assist with the suspension. I was looking at putting on Firestone Ride Rite bags. The local truck shop wants $255.00 labor to install. I looked at the directions on line and it just doesn't look that tough. Does anyone have any experience with installing these?