After spending a few evenings getting a rover up on the mun I managed it tonight. But there is a problem. The rover wheels turn, but they do not accelerate. The status says it is optimal and I cant spot any damage. Screenie: http://imgur.com/hW0eOUn The brakes are on in the screenshot, when I take them off the rover rolls down the incline and I have no way to decelerate/accelerate it. Any idea what the problem might be?