Hello Andy,
I did the exact same way you did,
-> 200 ohm outer solder joints as on pic and i have a short too
-> I do have very similar readings (3.53-ish pot mid way) with testing ground and 3rd or 4th from left and depending on the position of the CAL pot on the front of the rig and according to same setting of CAL or SWR on switch.
--> Traces from resistors to the other side of rig PCB (front) : same as you, i have short reading for same trace.
so, all SAME as yours... but,
--> BUT, i do actually have differences when it comes to the testing of together BOTH the middle REF and FWD solder pads (the red and blue arrows on your picture) at the SWR board.
And depending on the position of the switch :
SWR switch position:
on 20 kohm range and depending on the pot position:
max 9.43 (fully clockwise)
mid ca. 11.55 (middle or so, as the front plate and buttons not on the rig)
min 13.20 (fully counterclockwise)
CAL switch position:
i have a short aka open (on your radio, you have open on both switch positions).
What do you think? one of the diodes?
Thanks again for the pics and your support Andy,
Cheers, Chris