Thanks for the info. I think I will bring it to the store where I bought it eventually to see what they can do with this. I called them today and they told me that it would take few weaks to send to the company. I would be interested to know how to fixe this. I tried with my Hohner Performer 37 and it doesn’t do this. The good news is I can still use it by blowing softly into it. Overall, I’m very satisfact about this melodica. I like it.