I’m looking into it.
Edit: Seems to be bugged in the game itself.
Here’s level table in the base game (last tdyn here contains Outcast’s Secret):
Class,LevelTable,
levels,1,80,
records,records/items/loottables/gearhead/tdyn_head_c02_theexile.dbr,records/items/loottables/gearhead/tdyn_head_d01_theexile.dbr,
And that how it looks for gdx1 (AoM and consequently FG):
Class,LevelTable,
levels,1,
records,records/items/loottables/gearhead/tdyn_head_c02_theexile.dbr,