On my Typhoon it was doing something similar to that. It turned out to be the shoulder bolt that supports the idler gear. It had galled up causing it to jam when trying to surface. I had to increase the size of the hole in the gear by a couple of thousandths. That seemed to remedy the problem.
Fort Worth Texas
You are correct Captian, I see them. On our right as well as our left. Sensors indicate them to be.....................gray hair.