[Dobeman2000]

First off, this is my first post on here after looking around for awhile. My wife just purchased a new 2015 Camaro SS Convertible, and I have made my typical mods to it (headers, CAI, and axle back exhaust). A muscle car just isn't right without some muscle and the sound to match it. The problem I am having is after I installed the axle back exhaust (Borla Stingers) the portion of the exhaust right above the flat support bar is vibrating against each other. There is probably only about a 1/4 inch of clearance between the exhaust pipe and the support bar. My question is what can I do to stop the vibration? I have tried repositioning the axle back exhaust but can't seem to gain anymore clearance. Is there some kind of anti-vibration device I can place between the pipe and the support bar? I put a couple of wood shims in between just to verify this was the issue, but that is obviously not a permanent fix. Any ideas? Thanks in advance.

Update: Was able to solve the problem using washers as spacers (many washers), but there is no more vibration.