WhenI open the outside (decoration) door on my stove, I can see the damper adjustment on back left portion There's a small hole in the slide that I assume can be used to adjust the damper without having to pull the entire unit out of the firebox? What have you used to adjust the damper? It looks like a wire hanger straighten out would do the trick. Figured a someone here may have some guidance. I'd like to get things dialed in so it's burning properly.