SECURE THE COUPLING: About now your silicone is probably dry. Mix up bondo, fiberglass resin. Mix to consistency of runny peanut butter, and add hardeners. Chuck in the bondo with a spoon and float out the resin-bondo up on the coupling. Float out the bondo until it touches the walls. You are form- freezing the coupling so it will not move in the future. As this is setting up. Turn your attention to connecting the electrical cord and hook the wires back up. The wires all connect the same way they did when you pulled it apart, so label them if you are inexperienced with how a switch works. Test the motor after you reconnect all the wires. Note: Hold the motor with your foot before turning it on to keep it from jumping or moving.