Cleaning valves and I have the nut that holds the bellows on off and the bellows off. How does that heavy brass washer come off to be able to pull the guillotine out of the body, so I can change the gasket? Seems to be pressed on, but threading the bellows nut back on to the guillotine and tapping on it (trying to drive the guillotine through the washer) while holding the body is definitely not the answer. Now I have a guillotine and a bellows nut with bunged up threads. Being brass it didn't take much.:face-icon-small-dis