It's probably a Muzzy thing. Their fit and finish is pretty poor. If you have the cash, I'd definately go with an Akra. They make their slip on / bolt on's in CF or Titanium, and they sound amazing. Most people make CF stuff, though. M4, Muzzy ([:M87]), D&D ([:M87]), Micron (big [:M87]), Two Bro's makes a plethora of different CF stuff, Akra, Termignoni...there's TONS of choices, and the only ones I've heard of having problems with the CF are Muzzy and Micron. Two of my riding buddies had their Micron CF cans just disintigrate on them after only a few thousand miles...like to the point where the CF can shell unwove and separated from the bolt-on mounting plate, so the exhaust was just straight exit with no packing or anything. Sounded like ass, and he had this limp Microm CF thing hanging by the exhaust hanger.