I have an Old Potterton Boiler, Pt No 907219, & yes you guessed it, it packed up last week, I know whats wrong but can't find one Anywhere, It's the Solenoid Valve that opens the Main boiler Gas, the pilot Solenoid is OK. Any body got any ideas as where to get one as I Just Cannot Afford a new Boiler. Thanks for any Help I can Get, Cheers