Re: Bocal Question
It's relatively common practice to remove the whisper key vent in order to fix dents and split seams in bocals that are damaged. It's not difficult to replace one if it's been missing. If you have the funds and want to see how the bocal plays when fixed up you certainly can do it. The question is will the bocal be worth it after being fixed? You could at least test the basic playing characteristic of the bocal by taping over the hole and at least testing from Ab3 and down - that will give you some idea if it's worth the repair at all.
Bassoon professor at University of Wisconsin Eau-Claire
Maker of the Little-Jake electric bassoon pickup and Weasel bassoon reeds