Flush valve follow up....motherfucker and goddammit. I spent a goddamn hour yesterday replacing it. Should have been a 15-20 minute job. Why did it take so long?
See that grey plastic nut at the bottom? It's a 4" plastic nut. Nobody has a wrench to fit that. But MOST manufacturers include a circular plastic wrench IN the replacement kit, so you can easily remove the old nut, and tighten the new one. But not Kohler.
In fact, the old nut was stuck on the old valve FAST. I looked up hints online on how to remove it, and I was not alone in my frustration. So, how should one remove this? It involved cutting the old valve, and the nut, in multiple places with a goddamn saw. I had black plastic sawdust all over the damned bathroom floor. Finally got it to break, and release the old valve. Once I got that done, then installing the new gaskets and valve took maybe 10 minutes. But to get there took fucking forever. If Kohler had included a cheap plastic wrench (manufacturing cost about 8 cents) in its kit, it would have saved me a shitload of headache.
Fucking enshittification. Fucking Kohler.
Toilet is all fine now. Yay.