Now this gearbox is starting to bug me, I can't get my head around what it is doing. If I lock it in gear and rotate the pulley on the top of the box in the correct direction I can hold the wheels and they stop, but if I rotate the pulley in the anti clockwise direction the wheels are locked in by the wheel clutches but the wheels are being driven in reverse, it is like the clutches in the drive gears are operating in the wrong direction. I have not worked out the gears are to be removed as yet.