Ted
Success! Everything you suggested to tighten was a half or quarter turn loose, tightening, combined with your suggestion of a rubber insulator between the box and the pole, made a huge difference. I had to walk over to the pond and see the bubbles to be sure it was running! Thank you for your time and input on this noise issue. I just gave you a 5 star rating, it's guys like you that make this site the valuable tool it is.
Thanks \:D


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