Phase III changes:
Other than the color changes, the only true upgrade was the plug added to the top left side of the grip frame that powered the marker by pluging the other end into the modified 12 volt hopper that had a 9 volt regulator internally and a access plug on the bottom of the hopper. This way the hopper batteries ran the marker as well and removed the need for the external battery velcroed to the exterier of the marker.
enjoy
I then sold this marker and exited the rainmaker phase of my life, lol.