I have an Airline 62-403 and need to find a tone control. The senectivity switchs on the tone control are not working correctly. Is there anyone out there that can help me locate a tone control for an Airline 62-403?

:I have an Airline 62-403 and need to find a tone control. The senectivity switchs on the tone control are not working correctly. Is there anyone out there that can help me locate a tone control for an Airline 62-403?
:
You might check here.
http://www.oldradioparts.com/index.html
He has alot of parts and may be able to help.