I bought a new Kohler toilet awhile back. The thing is the biggest pile of crap I've ever shit in. Here's why. When it inevitably clogs, the hole at the bottom of the toilet is rectangular shaped. Doesn't seem like it should be an issue, except.... The round toilet plunger will NOT seal against the square edged hole in the bottom of the bowl, so instead of sealing and pushing... "it" through, it squirts up and out. Just a public service announcement. Buy toilets with ROUND holes at the bottom because they don't make a square edged plunger, I've looked. Ok back to my uuh "Problem"