Walmart Toilet Chemical vs. RV Dealer Toilet Chemical

huffaz wrote:
Does a small amount of water say on top of the toilets flush valve indicating a proper seal?

It does in my books.

Most of the time when water will not stay in the bowl, there is a bit of paper stop the sissor valve from seating. You can fix the problem by running, very gently so you don't damage the gasket, a piece of a bent coat hanger or what ever you have around the gasket.