[Boatanchors] Sb-200 problem

[Lawrence Godek]

My SB-200 band switch knob has been really hard to turn.  It finally 
started slipping and i didn't know for sure what band i was operating 
on.  Today i took it out to the Kitchen table, she is gone for the day 
so i took it apart.  The little ball that sets in a holder and plops 
into a depression  was quite tight.  I was able to loosen it up a bit 
with a screwdriver and put some lubricant on it.  I can now turn it with 
the knob somewhat but it still slips a bit.

Taking the knob off only showed me why it was slipping and i think it's 
because the set screws in the knob are not grabbing the shaft 
adequately.  They are flat headed.  What i am wondering is are there set 
screws with a more pointed head which might grab the shaft a little better.

The other thing that is wrong is that the insert on the knob that goes 
against the shaft came out of the inside of the knob  when i removed 
it.  For some reason it's really tight on the shaft and i can't get it 
off.  Looks like is would need some sore of wheel or bearing puller.  
Where would one find something like that that would fit a 3/32nd shaft?

Do anyone happen to have a bandswitch knob for the sb-200 laying around 
not being used?

Any other suggestions?

Larry W0OGH