Hi Carl,
I am glad to hear it works with the turret rotation. As you've seen I am using servos for both Elevation. and Azimuth so I am hoping I can get both.
I have space set aside in the turret and lower hull for both gyro controllers.
I picked this up at RC Tanks of OKC "Universal Turret Rotation Unit with Engine Deck Level Detection Switch"
http://www.rctanksofokc.com/Purchase-page.html 5th item from page bottom. It will lift the barrel over the engine deck if the depression angle is below deck level. Coupled with the Target Lock it should come close to operating like the "Real McCoy".
Looking forward to the videos when you get the opportunity.
Barry