“...If the injectors are squirting during cranking, that confirms that the points in the distributor are working...”

Even if the trigger points aren’t working, if the driver pumps the throttle while cranking the engine (which he shouldn’t have to) don’t the injectors pulse 19 times per full pedal stroke as commanded by the throttle switch? If so, then the plugs could get wet regardless of whether the trigger points are functioning or not.

I prefer to spend the 2-3 extra minutes to remove the distributor to the workbench where it’s easier to connect the ohm meter and to do the trial and error thing with the trigger point gaps. Just remove the two bolts that hold the distro flange to the engine block - don’t loosen the pinch bolt that secures the ignition timing. That way you don’t have to reset the ignition timing when you reinstall the distro.

For lack of any other instruction I try to get the trigger points to about 180 degrees of dwell by tweaking the stationary side of the points - open half of the time and closed half of the time. The dwell/timing is not critical. The gaps will close up over time as the lobe followers wear down.