[R-390] R-390A help needed

[Bob]

I have a S/W R-390A that I just purchased. This is my first R-390 I have had
so I am new to this. I am currently disassembling the radio and cleaning the
dirt out of it. I plan to replace the caps and try the alignment. I am
trying to remove the RF section but the MHz knob jams after a few turns and
won't let me zero it out per the instructions. My thought is to remove it as
it is and deal with the problems after it is cleaned and lubed or is there a
way to free up the mechanism?.

 

Thanks

Bob   WC0D