In which case ... you're vertex positions or triangle vertex numbers ( when you create the polys for the quad) are the wrong way round ... just change these and you won't have to rotate 180 about the yaw axis.
Happy to help when I can :) You do know that you can get away with only 2 tformvector commands to position the vertex's though .. if you like I'll send you some code later.
Happy to help when I can :) You do know that you can get away with only 2 tformvector commands to position the vertex's though .. if you like I'll send you some code later.