Welcome to OCC,, NICE 149!!
The BEST way to time the K321 is with a feeler gauge,, simply adjust the points,,
Messing with trying to "time" the ignition is something you delve into if the feeler gauge does not give you perfection.
I have always had 100% success with simply setting the gap of the points,,
The timing has a large tolerance,, so the gap setting is hard to beat,
KISS,, as they say about keeping it simple,,,
