On our prototype we had 2 of the large CIM motors and had the radio reciever on a temporary electrical board. But the Large CIM’s and the magnetic fields they produced seemed to cause interfearence with the radio reciever. I wanted to know if any other teams were axpierenceing this problem and what they are doing to solve the issue. I guess lead plating is out of the question. 
If you have excess wire from the controller and radio in a loop, try twisting the loop into a figure-8. Keep stuff away from the motors if you can.