Finally because a 'real' owner after my first duck valve (x4) replacement. Easy to do, just in a bad location. This is the aft cabin head on a 1999 4100 SCA. The forward head's vacuum pump/tank is 100% easier to get to - but of course the aft is what needed replacing first.
Sometimes it's worth finding a teenager sitting around bored on the dock and offering some cash to squeeze into a tight space. Sometimes a Grant or a Benjamin is just worth it.
Why old people need yoga - Duck valve replacement
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