OK, my brother started a new character recently, and I've been inviting his PM to the party, and it actually does gain B st even though it has never been fed anything.

I'm wondering if I could level his b st high enough to meet the req of a PM EX device, would it actually accept it? Or is there a seperate hidden requirement of needing your PM to be production level 80 or more.. will test this tomorrow if no one else has tested it yet.