How to solve the Champion 4 ghost flushing problem once and for all!

The alternative title can be, "How ridiculous regulations can cause a product to be shitty (no pun intended) and drive people to the aftermarket." LOL This is not a paid plug or endorsement in any way. Just want to show people a product that will solve a big issue with an otherwise great toilet. Link to Nuflush Champion 4 replacement flush valve: https://nuflush.com/nuflush-home/cham...