"Not to be out of place here, but isn't this your website: http://
www.atlantaharmonicalessons.com/id15.html ?
I know most harmonica techs are fairly self-trained, but shouldn't
this be the sort of thing you learn before going pro? I mean, when I
hire a plumber he may have his apprentice do much of the work, but
the apprentice isn't the guy in charge until he's done his time on
the job.
Knowing that you can't get a _high_ A from a standard B harmonica
would seem to me a basic thing for a working harmonica technician."