On Tue, 05 Jun 2012 13:55:14 -0500, "Doug"
wrote:

I noticed now on two toilets when I replaced the guts, that the water
supply shut off valve below the toilet didn't completely shut off the
water. I'd say it shut it off like 99.8% so you could see a tiny
amount of water still on. Now when it's connected to the toilet (in
my case two of them), no leakage. Of course the valve is open when
connected to the toilets. These valves are original with house (14
yrs old) with plastic handles so I expect not the best quality. Should
I replace them or leave it alone? I expect to be in the house at
least 5 to 10 more years. Also can these cheaper valves be rebuilt or
best to just replace? If I get a plumber to do it, I suppose they
will just want to replace them? Any idea what they charge in
Houston, Texas? Advice?

If there is no leak I would not worry at the moment.

In the future I would suggest replacing the valve with a "Angle Stop
Valve - 1/4 Turn ball valve". Watts brand are an excellent choice.
(found at homer depot)

Is your valve connected to the water line by sweating copper or
compression fitting?

Just get the correct size and connection method. 1/4 turn and the
water is off. I've added ball valves to my water heater shut off
(added inline) and to my hose bib is a 1/4 turn (when replaced).