Two problems:
- After flushing sometimes the handle sticks in the down position and the toilet keeps running. I tightened the plastic nut on the inside a few times, but it keeps loosening. Get a new handle? The canister (outside black) of the Aquapiston sometimes sticks in the upright position.
- A small amount of water keeps running into the bowl after it has refilled. It is never enough to cause an automatic flush, but is leaving residue on the sides of the bowl where it runs in. The water level in the tank isn't too high. I'm guessing there is a leak in the Aquapiston. Before I buy a new flush valve I am wondering if this could be the solution.