M-55 motor pause question
I have a 1970 M-55 and replaced the original motor some years ago with a newer smaller Musser model. It has been flawless until lately the motor pauses at slower speeds. At first I thought the paddles needed oil, but traced it to the actual motor having little pauses (almost a little stop start motion) at slower speeds. Does this mean the motor is on its way out or just needs adjustment? Any advice or insight on this?