Learned this the hard way two days ago. Had the bike fall off the kickstand. Even though I put the kickstand down all the way, I set it near a small crack in the drive that had some grass in it. Started the bike and went to the garage to put some gear on. Bike warmed up and started reving high like it usually does. I went back to adjust the choke. I just touched the choke lever, and down she went. Total surprise because I distinctly remember putting down the stand and seeing where it was on the ground. I figure it vibrated enough to move into that crack, compress the grass and because I didn't have the wheel turned to the side, it rolled forward enough to fold the kickstand.:doh: If the wheel had been turned, I don't believe it could have moved forward. Broke the LH step and the support for the PF3 popped out on the left side. Won't know for sure if that's screwed or not until I can take the bike out and see what happens at speed.