[TenTec] Century 21 Tuning Knob

[jfelts]

Got my C21 about an hour ago, its stuck on the low end of the dial, about 
14017 on 20m.  It recieves, and it transmits.

How the heck do you get the main tuning knob off? I've tried small screw 
drivers in case it uses set-screws. I've tried allen wrench and don't seek 
to hit the center. I think if I can get the knob off I can dribble some 
alcohol down the PTO shaft it will free.  It will move a tiny bit either 
way.

Jerry - NR5A - South Dakota