Here you go !!!
Yes, there is a place where you can purchase used Teletype machines, new and used Teletype spare parts and where there is someone to service them. That place is RTTY Electronics in El Sobrante, California, 25 miles East of San Francisco.
RTTY Electronics is run by Paul Cembura, who for many years sold and serviced Teletype machines, and is now a walking tower of Teletype knowledge. The pictures below give an idea of what Teletype items are available for purchase at RTTY Electronics. There are not 10, 100 or 1,000 Teletype parts, but literally 100,000's of Teletype parts, some new, organized, indexed, and available for purchase by Teletype restorers, rescuers, and users of Teletype machines of yesteryear.
IF Paul does not have the Teletype machine or part (SOME still sealed in plastic from 1970s, it likely doesn't exist).
Have fun !!!
PO Box 20101
El Sobrante, CA 94820-0101
Three Days of the Condor (film) ... reminded me of that era (Telex systems, AP/UPI wire feeds)