Thanks Guy's.

The bend tool in ViaCAD is Pants! However I can jump into form.Z and do the bend, then come back to MOI.

the .3dm reader for Modo is not a problem as the meshes I'm getting out of MOI are rendering really well.
You just need to make sure you delete the polygon normal map in Modo after import or you get weird shading
issues.

Jumping back in now!!

Roger