The manual for my new Jotul says not to clean the glass unless it has cooled. Now that winter is here, that will be some time in May or June if they mean cool to room temperature, so... If I clean the glass - I've been using the same cleaner as we have used for a glass top range which is recommended for stove and fireplace doors - how cool does it need to be? Is Jotul's warning because attempting to clean hot glass will damage ithe glass or is it to prevent burns to the person doing the cleaning? The doors are almost totally free of creosote, but fly ash and a cloudy deposit are present. Thanks for your help.