I have a Minn Kota Power Drive V2, twice in the last week, the power to the prop isn't quite right, the switch will rotate the motor left and right, but won't turn the prop, you can hear something clicking, but nothing happens, after playing around with it, then moving the speed control for the prop, it will start working again. Foot switch going bad ??? 

I just replaced that unit two years ago.

Any ideas ?