Ok so you have got EMEI (AUST) VEHICLE N 403, I think it is telling you the same as in TSD 702 but that confuses the issue with a preamble about having previously set the point gaps on No.1, it then moves on to adjusting from No. 6.
The segment method is described in EMER POWER S 523. You have to watch it as there are diagrams for No. 1 Mk 2 & Mk 2/1 for both that differ slightly & equivalent Mk 2 & Mk 2/1 for 8-cylindeer as well.
I think there is something odd on the Pig B60 in that it hasn't got a panel to see the timing marks. I've not had to set the synchro, but after 4 head changes I quite often loose where I am. So when assembled I put a coat hanger in No.1 cylinder feel when it is sort of TDC then rotate the rotor arm on shaft to point to No. 1 in the cap. Then try running it, if it doesn't run then I turn the distributor through 360 degrees.
When it runs & is warmed up I adjust the timing for best smooth running. I've never done flywheel marks, strobes, points opening & lights on/off. Modern fuel is not the same as it was in the 1950s so setting things to those standards seems to me to be a bit inappropriate in this day & age.