I use lacquer thinner to clean the rim. It removes any glue left. Clean back side of rubber insert. Use a Q-tip to clean it. Let dry, fit, cut and super glue it back in place.

As you will notice the rubber insert is worn and thin at the edges.

The sections I super glued have not come off.

Hope this helps. Never thought of the 45 degree cut. I'll try it the next time.

There is going to be a massive wave of 'chair users with their inserts pealing off and Out-Front won't do anything to help the consumer. As consumers we can make a FDA complaint.