jamesmanhattan
Explorer
Problem with this, is they seemed to drastically change the XP in the very last packet, and a lot of the bestiaries for the older adventures weren't updated.There might be some insight in one of the bestiaries. My recollection is that the Slavelords bestiary has a number of humanoids with levels and assigned XP scores. My suggestion would be to go through those and see if you can discern a formula (or a way of hitting the ballpark).
AD