Help with noisy mag3 pump

[kevinpaz]

Thanks for the note - i'll give it a try.

Unfortunately most of the noise is coming from the pump. It's a loud banging type noise - it sounds like the magnetic cylinder is banging against the sides of the chamber or something. It was quiet on day 1 - but it's almost intollerable.

Is this a defective model, or is there some trick i'm missing to keep it in "tune"?