It was the o-ring. replaced it and the leak has stopped.
"Christian McArdle" wrote in message
t...
The o-ring is fine, and everything is locked together OK. I thought it
might be an o-ring, so I'll just replace it anyway.

Yes, it is very easy for a notch undetectable to the eye to be enough to
weep slowly. Hopefully it will be in the O-ring rather than its housing,
though.

Christian.