just got my ultra q installed and when I took my stock muffler off I noticed my brake disc had been hitting my stock muffler...I knew I had heard a noise down there. Anyway, I installed my new one and only had about 3/8" between my disc and new can. Threw it on my stand and sure enough, it still makes contact. What should I do? Thinkin about markin the can and throwin a dent into it so it has a little more clearance. Anyone havin this problem with stock or aftermarket?