Yesterday we took delivery of a brand new glass topped stove. The top seemed to have some kind of greasy coating on it which we tried to clean with special cleaner with only partial success. Now no matter how much we polish the top looks really smeary and after only one use the burners have that sort of blacker halo around them. To say I'm disappointed is an understatement. Does anyone know if there actually is a coating or what can be done to get rid of the smears? BTW, the stove we're replacing also had a glass top but cleaned up a lot better than this one.