I buy one of these flush valves about every 6 months. A designer is having a bad day or a drug problem. The small plastic feet do not withstand the load of the surface in the long run. I've replaced so many of them that I can do it blindfolded. Since Kohler doesn't offer a solution (metal replacement, new tank design, etc.), the ultimate answer is to replace the toilet. I'm currently researching the most indestructible brands I can find.
Brushed Nickel Toilet Universal Toilets
9 Review
🚽 Kohler Genuine Part GP84995 Flapper (Hinge) - Multicolor, 2-Inch
9 Review
🚽 Fluidmaster 7513: Premium Extra Thick Wax Toilet Bowl Gasket with Flange - Ideal for 3-Inch and 4-Inch Waste Lines
9 Review
Fluidmaster 400AKRP10 400AKR Universal Install
9 Review
🚽 Korky BeehiveMAX Universal Plunger with Telescoping T-Shaped Handle, Black - 96-4AM
8 Review
🚽 FlexiSnake Drain Weasel Sink Snake Cleaner - 18 inch - Hair Clog Remover with Rotating Handle & 5 Wand Refills - Easy-to-Use, Flexible - Made in USA (5-Pack)
7 Review
Vastar 3 Pack 19.6 Inch Drain Snake Hair Clog Removal Cleaning Tool Set
5 Review
Triple Pack Hair Snake Tool - Ultimate Hair Clog Remover for Kitchen, Bathroom, and Toilet Drain Cleaning - Forlivese 25 Inch Drain Opener
3 Review