My 67lb Motorguide doesn't run. It's only 3 1/2 yrs old with only 20 hrs use on it and the prop doesn't spin. Batteries (it's 24v) are full. I checked continuity, and the toggle switch, and IT DOES HAVE POWER going through the 2 main wires TO the motor but the prop doesn't turn at all. I'm a hands on guy but I've heard that cracking the seal on the motor is for pros. Please offer advice on any similar experience you have had. Many thanks, Tony Noriega, Tampa