I wonder if anyone could advise me...I bought a wonderful looking steel stove in Japan where I live...it never felt very controlable but...it looked superb... after the first season I noticed thre glass was always black and asked the maker fior advice... he  asked for photos so I subsequently provided them.. he told me I  should not have placed gasket all around the outside stove glass like an  'O'  but like a 'U'  thus leaving the top of the glass without gasket...   I have no idea if this is correct and would like to ask my native speakers for advice...  I would really appreciate your advice. iam not quite read to die  ^^