<HTML>I have a brother in Shipshewana IN who does this for a living. He sits in his home office all day working on harmonicas. He has been chosen to help develop some new scales for harmonicas. He has worked on harmonicas for some well known people, but I don't have the permission to give out the names as endorsers of his service. He is a member of a small guild of technicians who specialize in this field. Here is his website. <A HREF="http://www.srp-harmonicas.com/">SRP Harmonicas</A> Regards Ron</HTML>