I received a response from my mutual friend who knows Dick quite well. He indicates that others have complained about a lack of communication. He went on to say that his production of amplifiers has been reduced to a trickle and his desire to do repairs is probably non-existent. His email address, belmail@sonic.net, is still active. I forwarded this thread on to him suggesting he might want to contact you. I'm sorry I could not be of more help.
Regards,
Wendell