I did this too. Solved the problem and created another one. Every time I took the bag off the bike (to carry into a motel), the inner tube piece dropped off and I lost it. I solved this by getting bag liners. Then the panniers stayed on the bike and the rubber patch stayed in place.It seemed on mine that the bottom plastic locator part of the bag got worn, so I cut a piece of innertube and place over the bike aluminum rounded part so it "clips" on tighter.