Apologies again - Tricky works out, though it's the less obvious of the two possibilities.
There may be different issues for the next couple of days, as I am scheduled for a small op early tomorrow & may be kept in overnight. If I can't post the question, I'm sure someone else will.
Sorry, we can't find any related questions. Try using the search bar at the top of the page to search for some keywords, or choose a topic and submit your own question.