Thanks to all of you for your comments - much appreciated.
One final general question - how do I get to see someone else's profile - I can only seem to get to mine (and edit it)? I wanted to keep the details for ChrisR and Tony (Agile) on hand in case I need them in the future.
Thanks.
Thanks - at least I am armed with some knowledge when I call them back.
I see you are based in London and by your responses - take it you are a registerd engineer. Don't spose you cover the Putney area do you?
Gasguru - thanks for the quick response!
So if there is wear or corrosion in the pilot assembly - should that be fairly obvious when putting in a new thermocouple?
Also any thoughts on what a new Pilot assembly and/or overheat thermostat could cost?
In about 4 years the pilot light has gone out about 3 times, but in the last month it doesn\\\'t seem to stay on for more than about 8-10 hours at a time. We called in a Plumbing/Heating engineer who replaced the thermocouple, but that hasn\\\'t made a difference and we are still having to...