Ok, maybe it didn't start out as a 7 tooth sprocket, but it was yesterday morning... Went to unload my bike for the Hare Scrambles, and my friend pointed out I was "a tooth or two". Turned out I was missing EVERY OTHER TOOTH! Problem was, I could only find a 13 tooth at the porta-store. Got the holeshot, but than people passed me on the straightaway like I was tied down! Could keep the whoops timed either. Bike wouldn't stall though... Does anybody know how much top end you lose by dropping one tooth up front??