Ive got the flowmaster american thunder exhaust system. I had it professionally installed and welded. but later on down the road I put a revtek 3in leveling kit and some bigger tires. and now when i hit a small rut, bump, pothole, etc etc. i can hear the pipes banging against something. So i got under the truck and looked and apparently its banging against the leafs? (everything is locked in and the pipes are not loose at all) I was wondering if anyone else has this problem or if there is any way to fix this.