Voltage Regulator Malfunction???

New ones of these are available with upgraded circuitry inside. Not sure if the one posted is old style or new.
3 things...
View attachment 1716065832
  1. My money is that there is an adjustment in that hole (red cir.)
  2. Check voltage from the green area to the negative terminal on the battery, it should be 0v
  3. Most likely you can replace the VR with a standard grounded field regulator for a 68.
View attachment 1716065818