Pave setting Vector to prong and seat on a non flat model

On a domed or other than flat shape the gem tools use vectors to create gem vector to then create gems stones that follow the surface. There should be something similar for prongs and seats. Pave wizard creates vectors for stone, prongs and the old vector for  the seats. But with distortion on non flat models make pave wizard pretty much a useless tool like in Artcam 9.

I truly feel I might be missing info on how its done but I cant find answers anywhere so far.