Has anyone had American Standard SmartValve 2000 toilet repair kit install properly? It is adjustable for the water level and I keep finding it creeping upwards so that the water level becomes too high and empties via the overflow. It also makes a lot of noise and in the middle of the night after installing it, my house burped (well, that is what it sounds like when you're awakened from a deep sleep by plumbing) and the valve itself vibrates so loudly that it sounds like air-filled pipes.
Is this thing junk or have I installed it wrong?