Does anyone know how to set up the weatronics 12-20R (THAT DOESNT HAVE A GYRO INTERNALLY) with and external gyro. I cant seem to figure it out.

I do not have the software in front of me right now, but should be a matter of connecting the gyro to the 'gyro in' socket. Then you can use the right click menu to assign the external gyro input to the desired output.