Got the Aquamaxx DFC-80 installed today. If this is a quiet DC pump then I am scared of what a noisy AC is. At 100% it sounds like an airplane ready to take off. Down to 50% an irritating, vibrating hum. Almost like something that is out of balance. I know there is a break-in period and I hope that doesn't just apply to getting a good skim. I hope this motor quietens down also. Really not happy with it if this is how it is going to stay. Also I guess there has been an update to the bubble plate which does not match the instructions, pictures or videos of it online. I'll hold out judgement for a little while. Anything I should check on this vibration sound? I can't imagine that I did anything wrong in the assembly but could I have missed something?