Author: Philip Caron
Date: 2018-04-16 20:41
Assume the instrument has passed a "leak" test, and that the problem seems to have gone away since . . . .
I've heard that worn pads can get full of moisture and stop closing holes properly, and that could cause squawking. Check the pads for any torn or fuzzy or loose ones, and replace any questionable ones.
Another possibility is something moved to an incorrect position, like the reed if it wasn't secured enough. Or possibly the linkage between the main sections, if the joint got rotated just a bit - the cork of that linkage gradually wears, and the positioning gets progressively finicky until the cork gets replaced.
One time long ago I noticed the screw in the middle of the throat G# key was "loose", so I tightened that. That made the clarinet cease to function, because tightened down that G# key won't close - live and learn.
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