For those that don’t know I took a chinook pop up camper and grafted it to a chopped lx450. I’ve got OME mediums on the front and OME extra HD springs in the rear paired with Icon adjustable shocks on all corners. The rear springs are the heaviest spring available and I also run airbags. The rig is about 6900lbs. The combo seems to work well but the rear sags even with the bags. I don’t think they are overly compressed and I’m beginning to think maybe when I welded the frame to the camper body it wasn’t completely parallel to the rest of the body. I’ve contemplated moving to a slee 4” to raise the rear because I hate the sag. I also need more clearance in the rear as my tires are hitting the frame underneath. I think another inch or so would resolve that. My question is that if I do move to a 4” in the REAR only will I need more or less correction? I bought the slee caster plates and I’m hesitant to install them them as I don’t want to mess with DC drive shafts. I do need correction but may go the washer mod now instead. Any thoughts/ advice?