Good morning Jeff, My name is ***** ***** i have worked in the plumbing and heating industry for over 18 years. I have also worked under CORGI and more recently Gas Safe working on boilers, heaters and fires like the one you are talking about.
It can be very hard to find spares for older models of any equipment. But this is especially true in the gas industry. Fires like the one you are talking about are rarely installed now a days because of the high risk they pose if they are not installed properly and maintained by a professional registered gas installer.
First of all I have to tell you that you are not aloud by law to work on this gas fire unless you are gas safe registered. Even if you own the house and you are only doing small works on the appliance. If anything goes wrong you will be liable and could go to prison. I would recommend you get a local gas safe registered installer to carry out the work for you. The link below is to gas safe where you can find approved and legal installers in your area.
That aside, the fire place in question does not have many spares available anymore. I have found two suppliers who may be able to provide you with the correct part but unfortunately you will not find it easy to find the manufactures spare part. I hope the company below will be able to help you out a little more. If you like i can contact them for you but it may take a couple of days for me to hear back from them. Let me know if that is what you would like me to do?
I hope that this answer has helped. I would be happy to help you further so please let me know.
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