Our PC's generator exhaust pipe is held up by a u-bolt which is attached to the generator frame with a 2 inch piece of rubber of some type. The rubber on ours broke on the way home from our last trip and wasn't really noticeable until I was giving the rig a once over preparing for another trip. The u-bolt was also pretty rusty. This is an easy fix if you can squeeze in there, but not something one would normally check routinely.
- Mike