I have a few questions on replacing the ESC on my Summit. It is all stock. 1. Do I need to remove the motor also? 2. Is removing the ESC wire in the receiver in the 27mhz am radio the same as removing the wire in the 2.4 ghz receiver (location & work)? 3. Can you break a T wrench? 4. What do I do when the screws in the receiver box are trapped in with dried dirt (5 year old Summit)? All I need is answers and the Summit will be back on it's feet. The Millibeast (like a million beasts) will be back running.