[Premium-Rx] 6790 Keypad replacement

[Ka9p at aol.com]

Hi.  
 
I'm reviving an old 6790 and have it working except for a bad numeric  
membrane key pad. 
 
As a result it currently is a heck of a 20 meter receiver if you don't mind 
 tuning in 1 hz increments :) 
 
Can anyone tell me if these are still available from Gary Wingert or  
another source, or whether you've been able to replace the membrane pad with  
anything else? 
 
Thanks, Scott