Steve, If you have a possible supplier for glass diaghrams, I would be very interested in buying some. I am sure that there would be a large demand from members of this forum. Just let us know. Ken Brekke I may have found someone who can make glass diaphragms, if so I will be happy to let you and this list know. By crosshead do you mean the eyelet that is glued to the diaphragm? Best regards, Steve