We discovered the hard way that Kohler have dozens of valves and trims, and they don't always work together, even when marketed as "universal".  Kohler website doesn't provide a list of trims that pair with appropriate valves and vice versa. They get a big fail on that basic customer messaging. So, before your plumber and tiler roughs in the wrong valve at thousands of dollars, make sure you have the compatible equipment in hand. We regret not going with another brand.