male pants on female figure-how to fix distortion in crotch area?

Hi,

On a few occasions i've tried putting pants made for male figures onto female figures.  But when i use the autofit it usually ends up getting distored in the crotch seam area.  Verts that belong on the plus side of centerline will end up on the negative side and sometimes even the y and z coords on a vert will be different from its mirrored x vert. I want to avoid having to rebuild the mesh in Blender where i do most of my work.  So is there something i can do in Daz3ds when i am prepping the figures and clothes before i export to Blender? should i not use autofit? is there a way to do it better using clones or whatever they are called?

One time i was trying to get a G3F clothing item to autofit onto a G8F but it kept crashing my Daz3ds.  So what i did was put the G8F in there and left it visible.  I put the G3F in there too and made it hidden and i put the pants on the G3F and left the pants visible.  I changed the G3F's rest post to be the same as the G8F and then from there i just adjusted the morphs on the G3F figure until the pants looked like they fit on the G8F.  Its a bit time consuming but if there isnt a better solution i will end up just having to do that.