I'm sure I've had this 'problem' with missing turrets. The GWX team did an excellent job of revamping almost all ship types (and adding a load more) but their library took out a few gun and searchlight files and replaced them with newer versions:
330mmQFR
150mmQFR
150mmDFR
F_REF_small01
F_REF_small
F_REF_big
In addition, the LSH team created these two gun files for their Italian ships:
14InchTripleT
6InchTripleT
While you're digging through the SH3 WSM files, see whether they refer to any of the EQP types above. If so, it's a relatively easy fix:
http://www.subsim.com/radioroom/show...ght=strasbourg
Good luck with the other problems...