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So I just got an RS80 and installed it yesterday. The problem is it's loud! Not only does the pump vibrate, but about every 3-4 seconds it makes this weird noise that I can only describe as.....uhhhh.....sounding like whale song. It's strange. If I close down the air valve some the sound will become less frequent, and eventually if I close it about halfway the sound goes away entirely. Has anyone had an issue like this?
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