I'm sure I'm not the only one to deal with this. The plastic insert in my seat bases are getting old and brittle. As a result, the seats wobble around and don't stay as stable as they used to.



You can see where the seat wobbles and has scratched the paint. Has anyone come up with a solution for this? Does someone sell new inserts? I'm not inclined to replace the whole seatbase, and don't want to reinvent the wheel if someone has already come up with a solution.

Thanks