Hello @geekrout ,
Welcome back to the RobotShop Community!
It is likely that the cavity under the liner, where the weight is placed, is no longer tight enough. This looseness could explain why the weight keeps falling out.
In this case, replacing the liner is indeed the best solution, as it will resolve the issue permanently.
Please don’t hesitate to reach out if you have any further questions or need assistance.
Kind regards,