hans wrote:
I used a needle file, just filing the end a bit thinner. I used a narrow strip of thin aluminium, as you can cut out of a used teelight alu holder, as a wedge to hold the reed above the reedplate (put between reed and reedbed) while doing the filing. A dremel would be a lot faster, but I was anxious not to cut too much away.
Just did the same on a Seydel Favorite LLF and took photos:


Reed plate is fixed on a small vice, which has rubber-protected jaws. Two small nails, which are sticking through two holes of the reed plate, are holding the reed plate in place on top of the vice, at comfortable height to do the delicate filing. I use a finger as guide while filing, but could not get that on the photo. Zou can see the thin alustrip holding the reed above the plate while filing. I used a Snark tuner, which works on vibration, for the tuning, and tuned relative to the other reeds. Overall the tuning changes when the reed plates are back under the covers of the harmonica, the tuning goes down a bit with covers on.
Strange that Seydel did not fix the obvious problems with the seventh reed. But the stainless reeds go well on the Session Steel low D.