Help. Have a Baxi Braemar 3 gas fire that's been serviced regularly for years. Now GasSafe guy tells me that the closure plate is not the right one for the fire and I need a new one. Gas fire is now said to be obsolete and tried anywhere and everywhere to get the Baxi part:090023. If I can't get the part I'm told I'll have to buy a new fire - and I'm a pensioner! Never had any trouble with fire before but now the gas is capped to that fire. Does anyone know where I can get this part?