Stuck in reverse throttle

My Bravo Quadrant was working fine. I didn’t use it for a week or so and when I plugged it back in the throttles are not working properly. Any plane with reverse thrust is stuck in reverse thrust. The exception is throttles 3&4 configured for the 747. They are still working as they should. I’ve gone over every setting three or four times. Cleared and remapped them and it is always the same. Stuck in reverse throttle. I move the throttle forward and they come out but go automatically right back into reverse thrust. From the 208 Caravan up to the twin props and the twin jets. Like I said, engines 3&4 on the 747 are working properly. I sure could use some help.