NX TCP inverted?

I have a 6-axis Fanuc set up in NX CAM with a straight head and a generic ball mill tool doing a program that follows a simple rectangular path (drive method: curve/point). I have set up the kinematic chain and gotten all the CSYS oriented so that the post-processed file corresponds perfectly in RoboGuide to what I have in NX, but only if the TCP yaw of the UTool is set to 180deg in RoboGuide. The Poses come out perfectly, but once it goes to a linear point based on Cartesian coordinates, the TCP is inverted. I feel like I must be missing something obvious, but I can't find it. In NX, the robot/head/tool/part all simulate exactly correctly. RoboGuide is a fresh install taking the conversion of NX's ASCII output and the tool STL (I'm just using it to verify the path and orientation before I request access to the actual robot).

Any ideas? Sorry if I haven't provided enough information - I don't even know where this problem would be stemming from.

In case anyone comes across this and is having the same problem, the Post Configurator in NX in the manufacturing environment has an option under Robotic Settings > FANUC Tool and Frame which lets you invert the spindle tool axis. This seems to have fixed my issue.