Did this to my 08 2500 HD and with a little trimming my 20's dont rub. My question is now when I hook up my 27ft enclosed trailer the truck sags in the rear under load. It rode perfectly level before I cranked the bars up. Will air bags level it back out if I buy them? If so what bags should I run? Ive been looking at air lift with the on board controls. Has anyone done this yet? When Im towing Im usually towing 7500 to 10000 lbs. I love the way it looks and rides, just want to fix the towing. Love to hear a reply from someone who has done this already.