Thanks to all who replied, we all seem to be in the general area pertaining to my question. I have my both vents a little less than 25% open and it works well. Thanks.
FYI, I recently bought another door with the glass for the stove so I can change out when the window gets to much build up. This way after I clean it, I'll always have a clear glass to see the blue ladies. Also, a back up if there was a glass or door problem . Thanks again!