Rangefinder patch off center horizontally on graflex crown top rf

I recently got a top rangefinder graflex crown 4x5 and was fixing the rangefinder mechanism, but can't find out how to adjust the position of the focusing patch itself. It currently is too far right, and I dont see any way to adjust the fixed mirror in any of the service manuals I've found. Any help or suggestions would be great, thanks!

This link may help. Apparently the mirror rotates.

Thanks for the reply, but the entire orange field is off-center to the right