Problem With Brep Curve Intersection

Hello,

   I am trying to create a sun shading facade. I have the script working pretty much the way I want (it will make more sense with more hexagonal cells, I am just working with a few to get the script working). As you can see from the script I have hex cells that will make up my facade being extruded along a vector that is a mirrored sun path, and where the extruded cell hits the sun path I would like to trim it with a plane. This is working in a few instances but the brep-curve-intersection is reordering the intersection points so that they no longer match up with their corresponding extruded cell. I figured this out by pulling out some list items through the script till I could find the discrepancy. Any help on the matter would be greatly appreciated.