Breast pump noises?

Kelly

I'm an exclusive pumper, which is bittersweet for me, but for some reason every time I get my LO down for a nap and start pumping she wakes up 5 min into my pump session. My current pump is a Medela Pump In-Style Advanced. It does make a weird ringing/squeaking noise in the pump mechanism that I can't get to go away and neither can my husband (who is extremely mechanically inclined and talented). I'm contacting customer service, but not holding out much hope.

Is there a quieter pump out there? Or any ideas on how to get the ringing noise to go away or be better muffled?