I still havent gotten to the point that i see the stoves glass air wash do a great job!need to clean the class about once a week.My dad and brother also recently got new regencey I2400 stoves which get glass brown stains also.in my case!the wood is around 2 yrs seasoned and the stove is burning hot (500).Im getting used to cleaning but would be nice to do less.Does your glass dirty up?