I'm 71, and I've been on home O2 for just a couple of months. After the first month I started hearing a sound like a motorcycle that needs a tune-up. This happened when I was on my side which is how I always sleep. The sound would go away if I turned on my back, but I can't sleep in that position. It was so bad that I ended up on the recliner downstairs, but that can't be a permanent solution. Has anyone else experienced this chattering in your air hose? What did you do about it?