Where did you obtain those 20-550 'lytics?[/QUOTE]
I had to think on this... Smell the burning odor?
I got them through MAT electronics in New Jersey. I'm reasonably sure of this.
Havent done anything else to this radio. I'm using it daily to listen to AirAmerica talk radio, so it gets a good workout.
Thanks for all the interest! Its one of the prettiest radios that I have run across... and YES, I would like to see the original style knobs!