I'm having a tolerance problem with the line-plane intersection command. If I ask the intersection points of 4 lines with a plane and use these to draw a polyline then the polyline is not planar! this occurs when the coordiantes are very big (>10^3) if I set the drawing in meters then I don't have this problem. I tried changing the tolerance and precision in Rhino but this seems not to have any effect. Is there another way to deal with this so I can keep working in mm instead of m?