20 Most Recent American Standard 2294.011.020 Afwall Elongated Wall-ADA Retrofit Toilet - Page 8 Questions & Answers

Try a bathroom supply shop or your place of purchase. Failing that try http://www.americanstandard-us.com/support/

If you've tried turning off both shutoffs underneath and water still runs, then the shutoffs are also likely worn out and need to be replaced. If there is no way to shut off from that point, then the only other option is to have somebody turn off all water in the house near your water meter or main water line. In many places, hardware stores will sell something called a "water shutoff key", but depending on your location, it may have a different local name. Once water is off to the whole house, turn the hot water on somewhere in the house to reduce pressure from your water heater before replacing your faucet and shutoff valves. It is a good idea to take one of your old water shutoffs with you to a hardware store to make sure the new one would fit propperly. If you know somebody who can take apart the faucets to check and replace just the washers, then it could be fixed with even less expense, if you would not rather replace the faucet with a new one that will last longer.

This sounds like the air switch in the motor is not working properly. You will need to remove the pump from under the tub to access the air switch located in a housing on the motor.

Replacement Air Switch will cost you about $20US Parts Center

Two things come to mind, The sinks were installed out of balance and way over tightened causing a constant stress on a warped surface, or a foreign object was left under lips of sinks. If they were purchased and installed at the same time you could have received damaged merchandise.

probably hair stuck in the drain. did you remove the stopper "pop up" if no hair or blockage there or in the trap, then its further down, you will need a small snake. 1/4 inch cable works well in bath and kitchen drains.
you can purchase one at home depot.

You may have to use a really neat tool and that is aunt splitter. You can get it at O Reilly's auto store or any of those stores. That should remove it.