I had a funny shifting thing happen on Saturday. I crashed in some sand and somehow my shifter would only shift in one direction. It would take cable up, but not release it. So I got stuck in my biggest cog, which was annoying but it could have been worse. We had a mechanic on site and he blew it out with some compressed air and recommended I flush everything out with WD-40 when I got home. Did that, and all's good.