Recently Dometic has replaced my defective 310 series toilet. They upgraded me to a 510 plus series. The 310 leaked around the water valve after replacing it with a new one (s) several times. Found that the leak was past the valve ( and not due to winterization, been down that path already
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I will post how the job goes, according to them , should fit like a plug and play. Haha we shall see. Toilet looks nice , and much bigger...