I have a set of ContiTech bags, but I could swap them out for Slam Specialties for a little more $$$. Is anyone running these bags? If so, have you had any problems with them? And I'm looking to maximize my lift. Do they have the same lift as Firestone/Slam Specialties? I'm going to run the equivalent of 2500's in the front and 2600's in the rear on a cantilever setup. I have a tandem truck w/ alot of weight in the rear and I want to make sure these bags can handle it. Appreciate any opinions on the subject. Thanx!