Last evening, after my last stop for a bathroom break and hydration, the bike started having a vibration. I was only about 12 miles from home, so I decided to continue. When I got home, I noticed that the belt was riding on the flange on the rear sprocket. This is strange because the belt has always run closer to the outside than the flange. I raised the rear by jacking on the left swing arm and started to rotate the tire by hand. It was free spinning but would get tighter in spots and you could hear a rubber scraping noise. On further inspection, I could see a gap forming between the belt and sprocket at the tighter spots. Expecting to find a rock in the belt, I did not find one. I did find a rock lodged in the teeth of the sprocket. I was able to remove the rock without the use of any tool. The bike is back to smooth as silk and I did not find any damage to the teeth of the belt. The alignment is maybe a little bit better than before. Very surprised that the rock was not dislodged by itself.
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