It might be worth a try to contact Peter Bayer. He is the original owner of Contemporary. He now runs Nisonger Instruments.
https://www.nisonger.com/
I've never spoken to Peter, but others have. Apparently results have been mixed when contacting him about Contemporary questions. Some have said that he's happy to answer Contemporary questions, others say not so much. It can't hurt to give it a try.
Also, I have sent you a private message, take a look when you have time as it might help you out. Best of luck!