Surface mapping, can it be controlled?

[peter.axl]

Hello,
The conceptual massing tool is... strange. The biggest challenge is to keep the in place-mass as simple as possible.
I've made a form from witch two atriums are cut with voids. These voids are created from a blend between two planar curves. For some reason, the resulting surfaces have different mapping properties. Most surfaces have a "planar" mapping of materials while other "stretches" materials and objects applied to it, see the attached image where I've painted a hatch to illustrate the issue. Is there any way to control the mapping??
As far as I can see the divide surface tool can only move, rotate and scale the "gizmo" of the division.
AUGIquestion.jpg/Peter

[damon.sidel]

Usually a planar surface will be divided with "straight" UVW and a curved surface will be divided with a "stretched" UVW. I would triple check your blended void and verify that it is creating planar surfaces.