[R-390] KC and MC knobs

[John Warren]

I would like to know if the set screws on the MC and KC knobs are normally
very hard to break loose. I had my R-390a on the bench since a bias resistor
in the BFO circuit opened and after replacing it and re-capping the IF deck,
I decided to remove all the front panel knobs to clean the front panel up as
I had not done this since I bought the radio this summer. I only have a
Bristol allen wrench and was not able to budge either one using moderate
effort. Do these knobs really need a bristol screw driver like the OEM one
normally provided with the radio to get them off?

By the way, I also did the SSB AGC mod while I was in the IF deck and I am
amazed at the difference in the AGC operation on both SSB as well as CW.
Thanks to Dallas Lankford for coming up with this and to those who have it
included on the their web sites. I am really glad I found the thread on it
in the archives that are posted on the web.

73, and thanks for any suggestions,

John K5QX