So i learned the hard way not to let others ride my bike. I let my brother who is a clyd like myself, use my bike when he was visiting from out of town. Halfway through the ride the seat angle starts to change, and I adjust it. A little further down the road it happens again. I took it apart today, and the teeth were all stripped! My brother is about my weight but all of his weight is in his bottom. Despite me telling him to stand up over big bumps, I don't think he actually listened to me.
Don't have the money to fix this right now, so she will be sitting the garage for awhile.