DewDude wrote in message
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On Oct 3, 12:01 pm, "N_Cook" wrote:
you can play through a vib ip with no pedal sw and its fine, so not a
V2.....onwards problem

What are the tubes designations for V1? It sounds like some sort of
cap problem? Have you tried shotgunning it and changing all the caps?

++++

I will get inside it today. Seems odd that varying the associated tone
controls has no effect on the whistle tone or level