We also have the Thetford 42072 with same issue. 2 new seal kits replaced and still water passes. Dealer says to let the pedal snap shut, Thetford says that letting it snap could damage the pedal assemble. Laura of Thetford is sending us a lower base to seem if that helps. Will let you know how that works. Prevously had a Montana 3400RL and pedal spring assembly came apart and could not get it back into place. Dealt the 3400 on the 3790 and thought all out problems would be over LOL
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