well, i just got the new hl pershing, and it works fine, but my problem is that the tank is slow at responding to the controls. i tried fresh batteries, but it did the same thing. when i push the turret left on the controller, it won't move till the tank movement control is being pushed, and from certain postions, 10 feet away, it won't even register that i am controlling it with the controller, do i change the main funtion board, or the other green circut board, any suggestions