Anyone know of a source for Kohler toilet parts? Not sure what model number I have, it's a Kohler 1-piece 1.6 gal/flush. Recently replaced the fill valve with one of those universal ones from the hardware store and it's hella loud so I'd like to find the actual Kohler one. More important though is the gasket below the flush valve, which isn't the thin rubber kind carried at Lowes and Home Depot, it's the thick spongy kind, almost like the tank-to-bowl gasket of a two-piece toilet, but those aren't a good fit. Roughly 3" diameter.
It does seem like Kohler has changed flush valve styles at some point, from the flapper style to the canister style.
So Summary, anywhere online or in-store that would carry real kohler brand repair parts? Best of all would be someone who could look at what I already have an tell me what I need. I've looked at a lot of diagrams online and none seem to match my toilet.