@McCreed For me it's all equal parts of what is advertised in the photo. Could be something to do with the BLO having secret "added drying agents" dunno. I also used pure gum turps. Is that the same BLO you used mate?
Same brand of poly, BLO was Maxi brand, also "pale" but no mention of drying agents specifically. However it is labelled as "fast drying". And I used mineral turps, which was what I read to use. I have no explanation for lack of success. Since then, I've been successful and content with spraying satin poly on my necks.
If conditions are right and there's no "human error" I can shoot a neck in one day then it's just a matter of waiting for it to completely dry. Last satin poly neck I did, I had it installed on a body after 8 days and it was just fine.

The floor board Tele got some paint today. Going for a rat-rod look so no primer used.
Is that guitar hanging in your padded cell???