Blender can do texture painting, so loading V4 and these textures in Blender should allow you to clear up the seams, and save out the corected textures.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!