Thank you, and yes weird but sorted now. I did wonder if the valve that was screwed into this fitting might have been over size and forced the socket apart. BBs technicians admitted mine was not the first with this problem.
Your comment “enjoy your machine again” made me laugh because out of its box and new, it has only prepared four coffees before the geyser within erupted, so I haven’t really had time to do anything. I take your point though, and will very much enjoy experimenting with it going forward.
Thank you for your encouraging words at the start of this. You will understand my annoyance and frustration with a piece of brand new duff kit. I was wondering if a flood of me too owners might say that Elizabeth was trouble, or hopefully find reassurance that many owned this machine, had it work properly for more than a week or two, and were enjoying it without a problem.