[flitzwhopper]

i had one in the Argosy get stuck in the air holes in the top. The washer was real flexible and a bit sticky. I think that high pressure shore water caused it it to get stuck. I've replaced it with a washer that worked on testing it with the toilet out of the unit. I worked through a couple from the hardware store and found one to work. Being able to hook it up to the garden hose, out of the unit was real helpful.