Michael, thank you for the information. Did a little google research. A couple of explanations:

Circa 2005: http://www.chadvernon.com/blog/resources/managed-directx-2/texture-compression-filters-and-transformations/

Up to date: http://msdn.microsoft.com/en-us/library/bb206250.aspx
It seems that turning off "bilinear interpolation" would require changing the MoI program as to how it uses Direct3D9 ( or DirectX?),
and maybe the result would be very poor anyway?

Read that NVIDIA video cards do not allow disabling of bilinear filters.

So I'll probably proceed using the filtered PDF textures, and guess at where to place the MoI Nurbs curves. The difference in location
is, (at a rough guess), say maybe 1/100 of an inch, and the plans are not perfect anyway. The Nurbs curves will be nice and crisp.

- Brian