Mine were replaced last fall under warranty. The replacement tubes seems to be made with a higher quality material. Time will tell but they are much better than the OEM ones.

Springman: the length is critical. Mine barely fit back under the seat. We have found with the OEM tubes, that if you wait a bit for the tubes to cool down they are easier to get back into the holes. I guess that the expansion when they’re warm makes them just a bit too big to pack into the receptacle/hole.