On Feb 19, 12:34*pm, J wrote:

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Anyway, I figured I could at least take the knob off and do some
poking around - but the plumber somehow managed to strip the tiny
inset hex-head screw that holds the hot water knob in place. *I can
remove the screw in the cold water knob, but that doesn't help.

The product seems to rather underdesigned if the assembly depends on a
'tiny' retaining screw. I would give him a pass on that aspect and
have him make the repairs. He will probably drill out the screw and
complete the disassembly./diagnosis and be able to fit a new retaining
screw. Discuss that with him in advance so he can bring the
appropriate tools/parts which will keep the cost down. You might do
well to choose future plumbing products from makers of more robust
hardware, especially Kohler, Moen, and Delta. Being on a well your
water has a good chance of having much more debris in it than a
municipal supply, and that amy be the root of the problem. Good luck.

Joe

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