I have just finished my build and have found an unusual fault which may help others. I thought I had lost power to the right hand motor but after swapping cables and finding no problem took a look at the gears. I found that the small drive pinion on the end of the motor had slipped along the shaft and although everthing looked fine it was in fact slipping, pushing it back towards the motor made a temporary fix and confirmed the diagnosis. I will order a replacement motor.
Like many others I also found the left stick instructions confusing, pushing the stick forward elevates the gun and if held the gun also returns down, as it is driven by a cam and the gun does not jump back down I think the motor may be reversing automatically. Pulling the stick back fires the gun with recoil and muzzle flash.
I am also finding that occassionaly a small obstacle will stop the tank and the motors cease to drive, this is corrected by switching the tank off and restarting it, is there some overload protection device incorporated on the control board.
My smoke generator pump is working but no smoke is appearing, does it take time to warm up, and how much fluid do you need to add?