I replaced the gaskets on the glass and door frame on my Contour stove. This is a new stove and I have not burned it prior to gasket replacement. I believe that I over did it with the gasket and sealed off the air wash system. The window gets very dirty quickly. The flame makes a whistling sound the moment it ignites. The stove works really well. There are no lazy dull flames. Does anyone know where the airwash should be located? Top or bottom of door? I assume the flat gasket sealing the glass will need to be removed either on top or bottom?? Any insight would be appreciated..