Author: ebonite
Date: 2021-03-14 13:08
>> and that's the middle B (everything closed, with register key) is quite sharp, and the lowest C# as well. <<
There is a work-around that some people use to flatten the middle B. I think I remember reading (maybe on this board?) that people have used it on one of the older buffet models, so it may work on your instrument.
Glue a thick block of cork under the thumb low-D key, so that it doesn't close fully. This means that when you press the key, it will rest on the cork and the pad cups will come near to the lower tone holes, without completely closing them. Then, if you have a middle B that needs to be flattened, just finger middle B as normal, while pressing the thumb key. This will reduce the venting, and the middle B will be flattened... obviously don't press the thumb key when you play low E, as that note is usually not sharp. The compromise is that you will no longer be able to use the thumb key to play low D as it won't close the holes properly, but you should be able to play it using the pinky keys: BTW this depends on how the thumb key is linked to the other keys---I think it works on those buffet instruments.
For the sharp low C# you can put some "blu-tak" or wax on the upper inside surface of the lowest tone hole on the instrument. It will flatten low C#, though it might also make it sound a bit stuffy. It will also slightly flatten low D.
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