Made a new part to extend the battery compartment towards the rear of the Phantom. Removed the USB cable and mounted the USB mini socket where it would be accessible from outside. Overall it was a net loss of about 6 grams. Now I am able to get longer batteries in the Phantom with the weight shifted more to the back to balance the camera and gimbal. Had to lenghthen the cable that connected to the NAZA. I will be filling in the seams with glue and may remove the screws.