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Alto Clarinet Repair Question

Author: NOLA Ken
Date: 2019-06-05 01:54

I have a Leblanc alto clarinet (Model 420 per one tech) that I bought a couple of years ago. Since then I've had it overhauled once and had it to two other techs trying to get it straightened out. I rather like it when I can get it to play properly, which is rarely despite the work that's been done on it. I traced one of the problems to two set screws on the lower stack that are so loose that they jump out of adjustment after only a few minutes of playing. I'm looking for suggestions on how to deal with this particular problem.

I bought a tube of Permatex Low Strength Threadlock Purple from one of the instrument parts companies thinking that it might do the trick. But since I have no experience with this product I find myself hesitant to use it for fear of gluing the set screw permanently in place. Will this stuff tighten up the screws while still allowing me to make some adjustments over the long term? Any other suggestions?

BTW, I've been through the mouthpiece thing and that's not the problem. I have a drawer full of them, including some great vintage pieces and a couple from the best of the contemporary masters. The mouthpiece is not the problem.

Thanks for any help anyone can offer.

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