I’m curious about the tools you use for tuning, Alan. I have a curved file from melodica.com. Have you ever needed to replace a gasket? I’m a little afraid of stripping the screws and wrecking a gasket
I took the adaptive pitch test – 1.425Hz. I noticed many tuners are accurate to =/- 1 cent. Anything under 5 cents I leave alone – I am not as experienced with melodica tuning as Alan, or as one of my students who tunes often. I find that some of my instruments read differently on my tuner from day to day! so have become more conservative about tuning reeds – often just tune the worst offenders til they are almost acceptable.