Hello, I am also having the same problem as col wells in that I am trying to add a gasmask to the sample BI soldiers (a soviet style soldier). In the sample models released by BI, the was a p3d file "head" that has the model for the mask and I cut and paste it into the SLA soldier model and it is a perfect fit on the model and looks great in buldozer but floats in the middle just like the mask in the pic that col wells posted. I tried to highlight all points of the model and merge the points but the problem still persists. I can't seem to find any solution in forums but if I can find an answer, It will probably be here. BTW, I love the latest NBC soldier released by wells, glad to see that he redesigned the mask to have just one filter.