Thanks to your comments I successfully took apart my concertina, that is really an accordian, and cleaned it and put it back together. It sounds a lot brighter the delay on one note is much better! But the rattle notes on the low octaves is because the valve isn’t closing properly. Unfortunately for me the valve has a plastic covering that is layered like a leaf spring. It has dried out and gone a bit curly. And to make it worse it’s just glued on. What can I do about that! Could I get another one? Could I make one? Has anyone else come up with a solution with these cheap concertina like instruments. I love it!! And i play everyday but I won’t be able to get a real concertina for some time. And ideas guys?.. and gals…?
Thanks for reading this anyway.