are you not boiler phycic man T??
lets guess a fix and put no detail in.......
its the thing that runs thats the problem, next to the other biggish thing on the far side. replace that and all will be well.
do you think people come back to read the possible answers cos you rarely get a thanks! i will look into that you never know it might save me a few pounds........or even my families life???????
iain
May 2008