Tried using the anti-jam button? I know it's obvious and I'm 99.9999999% sure you have, but I had to ask. I'm still trying to find a way to make mine go a whole training day without having to change the batteries
I managed to stop the constant whirring on my torque...........i glued the whole impeller assembly together....seems to work ok'ish,the ball stack now stays under constant pressure all the time instead of the slip drive engaging,not sure how it will affect the battery life or torque motor.