Hi, I am sure some people have the same experience with their new 9010, but I have been operating my 9010 in-sump without the extension kit for around a year now. However, the rattle noise from the cup + cap is driving me nuts lately.. even with a glass top over my sump. The noise has always been there, but I have been tapping or rotating the cup and cap sometimes quiet the rattle down a bit. However, due to evaporation, water dew gets to the neck of the cup and cap, it will just rattle louder again. Is there a way that I can stop the noise? It is more of a humming sound from the motor shaking the cup and cap.. since the cup just sit freely over the box and the cap doesn't screw on tight.