Originally Posted by
SpeshulEd
I raised it about 2cm. I actually noticed the bolt was quite loose, it's possible it could have gotten bumped down from my fat butt sitting on it going over bumps.
I am always worried this will happen (knees hurt if my seat is too low), so with a new bike or a new seatpost, I always make a mark on the seat post so I can tell at a glance if it has slipped. A small dab of paint or nail polish works and won't come off until I want it to.