[Elecraft] K3 VFO A tuning knob set screw

[John H Gibson]

Earlier I wrote:
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I currently am assembling my new K3 #820 and have reached the step where I 
need to mount the VFO A tuning knob. I am unable to advance the knob's set 
screw far enough to clamp the knob to the shaft and am considering running a 
tap in and out of the hole to clean up the thread.

Does anyone know the diameter and thread pitch of this set screw? If I hold the 
screw against an 8-32 tap, it seems to fit, but I am worried that it might be a 
metric thread instead.
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I now can report that I took the bull by the horns and used my 8-32 tap to 
clean up the set-screw threads in the VFO A knob. The 8-32 set screw then 
went in smoothly, and the VFO A knob now is mounted on the VFO A shaft 
encoder.

I ran intro a different problem with the VFO knob. The knob would not fit on the 
shaft, and I also could not insert a 1/4" drill bit shank into the knob. I then used 
a 1/4" drill bit to gently ream out  the knob, and it now is mounted on the VFO B 
shaft encoder.

Thanks to Thomas, Vic, and Windy who were kind enough to respond to my 
request for help.

73,
John, no8v