Precision is key! Optimizing a clarinet key can come down to just a few ten-thousandths of an inch.

[@jennifergilman1377]

It’s what sent me crazy. Wish I had you as a repair person. My ‘f’/ low Bb had not been closing with my right pointer. Stuffy. But NEVER solved. Why? Because my repair man had bigger fatter fingers than me. So my complaints did not register with him. Informed every register that I played in. Finally made me buy a new clarinet.