I have a Motorguide Tour, 82 lbs, 24v, Model 942100020. When I press on the pedal the arrow on top lights up (so I know it is getting power), but the prop does not turn. I took the prop off and everything looks good - pin is fine, no line around shaft, etc. Any ideas on thoughts re what the problem may be or what further troubleshooting I should do? TIA! Art