: : : If non-absorption of stains is the purpose, then I would see
: : : little point in glazing the trapway beyond the bottom of the
: : : bowl. I really think that it is to assure unimpeded movement
: : : of waste, and without glazing, friction is much greater.

: : : The question remains, is it normal that at least some of the top
: : : of the trapway at the exit is not glazed, or is it a screw up?

: : Richard,
: : Glazing does help the waste slip through the trapway. The underside of the toilet should not be glazed. The wax needs to stick to the bottom side. Kohler Wellworth is not considered a good flushing toilet in my opinion. Terry

: Terry,

: Thanks for your response; however, I do want to clarify my question so that I can make an informed decision on what I do get.

: On the Wellworth that I picked up, the top of the trapway at the exit was not glazed, though the bottom of the TRAPWAY did seem to be. Is this what I should expect with a "fully glazed trapway"?

Richard,
I would check with Kohler on this. It's their advertising. 1-800-4KOHLER
They may have a definition on this that determines whether yours is defective or not. It could be by design, they will know.
Terry