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Effective August 13th, Monty Clark will have charge of the Conn-Selmer parts program. Here's what he posted on the Delphi Repair Forum:

"Greetings fellow repair technicians. As some of you may already know I have been hired as Andy Smith’s replacement as the Parts Manager at Conn-Selmer. I will be starting on August 13th of this year after 22 years of service in the Marine Corps, 10 of which has been in instrument repair. I have been authorized by my future boss to speak as a Conn-Selmer employee and ask my fellow techs about what you need from me when I get started. I have viewed past discussions in this forum about all of the great things Andy had started and he has sent me many of his plans. He has a great foundation for me to start from and I believe with your input great strides can happen in a relatively short amount of time. So please hit me with the good, bad and the ugly. If you would like to discuss things in a more private forum let me know and we can do so over the phone. I want to create an ever improving relationship between you, where the rubber meets the road, and Conn-Selmer.
Monty Clark
Head Instrument Repair Technician, School of Music
Virginia Beach, VA."

I'd say contact the low brass marketing manager, but that position is currently open.
You could try to see if a local dealer could put you in touch with your area's CS District Manager.
You might also try contacting the plant directly 440-946-6100.