Thank you for the replies.
I dealt with Unicomp back in the 80's and 90's. I called them this morning and was surprised that someone answered.
They said "no" to anything about M15s. NO parts, NO service, NO ideas, NO help.
He said to check a site called clicky something....... Left an contact question there.
Will contact outfit suggested in this thread.
Thank you, keep the recommendations coming.
Matt
PS , the CONSTANT "verification" questions are ASININE!