[R-390] Kilocycle Change Knob Collar

[Benzon Robert]

Gentlemen:

The kilocycle change internal knob retention collar with the set screw =
on my early Motorola R-390A has broken.  This makes it impossible to =
tune the radio, obviously.  Does anyone know of a quick fix for this?  I =
thought of using or modifying a drill bit stop collar or something =
similar.  Barring that, are the knob retention collars available out =
there somewhere?  Hate to have to obtain an entire knob assembly, but =
would like to find one as a final alternative.  Thanks, in advance, for =
the help.

													Bob Benzon
													Fredericksburg, VA