I have the hotchkis tvs in my truck. When I installed my roll pan my back end raised up. I installed a set of shackles in the rear to bring it back down. I first put it othe lowest setting ( highest hole ). It was too low in the back, even lower then the front. I didn't want to lower the front anymore. So I put it on the highest setting, it sits pretty level right now. Also I have a hard tonneau cover, so if I take that off the rear end goes up a hair more. I installed really small bump stops also or else It would've hit.