Has anyone ever found a way to reduce the minimum air intake position closer to zero on a Quadra Fire Cumberland Gap woodstove? I’ve had the stove 15yrs, it works great but with the air shutter closed I’m certain there’s a lot of air still getting in with the damper in the closed position. Gaskets all are good. I can’t see any access to the damper linkage in this stove. On shoulder days it would be good to shut this down a little more.