Posted: Thu Nov 01, 2007 11:35 am
I would be very careful with the CLR. The results may be the same as vinegar, if let soak too long. The following is straight from the product's web site. The highlighting is mine:
TIPS FOR USE:
Test a small area before applying to all surfaces.
Avoid prolonged contact with any surface; always rinse thoroughly with cold water after two minutes.
CLR is septic safe and contains no phosphates, bleach or ammonia.
CLR is non abrasive.
Always use CLR in a well-ventilated area.
Always stand on a non-slip surface while cleaning.
Wear household rubber gloves when using CLR.
Do not use CLR on wood, clothing, wallpaper, carpeting, marble, terrazzo, natural stone, colored grout, painted or metallic glazed surfaces, plastic laminates, Formica or aluminum.
CLR is corrosive if left on too long.
Never reuse bottle.
Never mix with other household cleaners or bleach.
TIPS FOR USE:
Test a small area before applying to all surfaces.
Avoid prolonged contact with any surface; always rinse thoroughly with cold water after two minutes.
CLR is septic safe and contains no phosphates, bleach or ammonia.
CLR is non abrasive.
Always use CLR in a well-ventilated area.
Always stand on a non-slip surface while cleaning.
Wear household rubber gloves when using CLR.
Do not use CLR on wood, clothing, wallpaper, carpeting, marble, terrazzo, natural stone, colored grout, painted or metallic glazed surfaces, plastic laminates, Formica or aluminum.
CLR is corrosive if left on too long.
Never reuse bottle.
Never mix with other household cleaners or bleach.
, then removed all the old oxidation inside the bowl with the dremel tool and wire wheel. Blew everything out and layed it on a clean rag(not in that order). Next, the top flange was also warped slightly, so that was straightened, then both 1/4-20 holes were stripped out, no signs of any threads, so a couple heli-coils and 2 new studs/lock washers/ and nuts, and that was back to original. Blew everything out, then installed the new idle tube, installed the small fiber gaskets under the discharge nozzle and the needle valve cage after I gave them the "George Willer Hoochy Coochy Silicone Sealer Treatment" 
You