Right- 1st mow in about 3 months. Yes, I have had this scare before, but wow- just finished mowing! Gears (pulleys) are working fine! Yipeeee! I think you are correct- have to jiggle/rock/move the seat/machine a bit to get tings to fall back in place. Anyway, Im sure I'll be back here soon with other problems. Thanks, Fish, and Bert!