hi @rmackay9, You were indeed right, it was a GCS issue, I rebuilt the Q Ground Control and the problem got resolved.
Another issue was integrating Benewake TF-02 Pro Range finder with ArduCopter 4.0.7. I was unable to use the Benewake Tf-02 Pro Ranger finder in GPS1 or GPS 2 serial ports.
@mlebret sent me a configuration, which was for ArduCopter 4.0.3, and voila, It is working now.
I reflashed Pixhawk Orange Cube with ArduCopter 4.0.3 and with the same configuration, I was able to get Benewake TF-02 Pro working on Serial 3 ( GPS1 ).
Great. MP has been fixed now as well. The fix is only in MP beta and I can’t say when Michael Oborne will release the next stable version but I’m sure it will get out eventually.