Ralph Mowery wrote:

Yes, that's possible. I have a HP-55 and it works, so I don't want to
cannibalize it. I'm sure there has to be some company that can custom
manufacture crystals to specs. I did try Bomar, but have not received a
reply.

** If you have done any Googling on this at all, you know that there is no such company.

Stop being such a naive PITA.

Do you mean this company :

http://bomarcrystal.com/


** FFS they don't make one off specials for hobbiest ******s like the OP.



...... Phil