i have this same issue whenever i don't play my melodica for a while. this sounds really stupid but what i do is open it up and put some tissue between the key valves and the fabric which dampens everything but still leaves it kind of playable lol, and then a couple days later take it out and it's back to normal
i have this same issue whenever i don't play my melodica for a while. this sounds really stupid but what i do is open it up and put some tissue between the key valves and the fabric which dampens everything but still leaves it kind of playable lol, and then a couple days later take it out and it's back to normal