Your math is correct. But there is more. Looking at it in detail now, at PL5 there's an additional 4 extra points given, totaling to a -14 deficit. This mistake is unfortunate as I don't have the working files for Remastered anymore, and I'd have to redo the entire manual from scratch (without some of the original artwork, even) to fix it.
A quick and dirty fix (without redoing the whole build and using the round attribute costs rule) to each of the PLs would be:
PL0-1 Guard and Threshold -1 each.
PL2-4 Remove Versatile Model.
PL5 Might and Systems -1 each.
Recover Guard and Threshold by PL 2 and regain Versatile Model by PL 5, obviously.
Boy I sure hope this is the one build with mistakes and that the rest are fine.
Thanks for pointing this out!