OK, so I has a V3 w/ custom morfs saved as a morfed character. 15-ish Megs. I open her up in MM to quickly set all morfs to zero. Save file. 165 Megs!!! I zero all morfs by hand in Poser the hard way. 11-ish Megs. As a test, I open Aiko3 blank in MM. 768K. Do nothing & save. 1.12 Meg! I can't see it savin' external geometry, 'cuz the A3 obj is 8 Megs. WTF goin' on?

WARNING!

This user has been known to swear. A LOT!