It may well be, but I recall somebody asking it on another group only
recently, seems a very common problem. One might have thought with today's
boilers and the servicing that goes on such things would be consigned to
the bin of history, like the original post.
I guess that some people do not see the harm in perpetuating a thread
rather than create a new one, unaware of the way Usenet outside works.
Brian

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This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

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Note this Signature is meaningless.!
Harry Bloomfield; "Esq." wrote in message
...
Peter brought next idea :
Try wobbling it rather than forcing it by pulling hard. When you have
removed the key put some Vaseline on the o rings and push some inside the
hole it goes in. It will be much easier next time.

Another 12 year old regurgitated post..