I just got my new hearing aids yesterday and they are alot stronger than my previous ones. they are phonak extra 211az bte. i havnt worn bte’s in over 15+ years. Tonite after i got home from work i noticed some moisture in the tubing and detatched hook and tubing from hearing aid and blew some of the moisture out. when i did a little circular piece of somthing came out of the hook . it looked like a tiny piece of paper. what is this and how important is it. I go back to my audio next wednesday for my follow up visit.