Lucky dog... I had to grind off my disc brake hub mounts because the sprocket would've hit the frame. I've got a deep-dish rear end with 9-speed cassette, so the offset is pretty far left. In fact, even after grinding off the rotor mounts and spoke-mounting the sprocket in addition to engine left-tilting, there is noticeable "chain-walk" (is that a word?) between the offset engine and spoke sprockets. Only time will test long term durability in my case.