Argghhhhhhhh. Mea culpa.
I'd written one and a bit paragraphs when my younger brother suffered a stroke and constant travelling to and from Suffolk combined with hours on the phone sorting out his care it completely went off the radar. I won't bore you with the ins and outs but I'll see if I can't find the time to finish what I started.
Shame on me.
Thank you for the update, Bunker Hill.
Sorry to have bothered you with this, when you obviously have more important issues at hand!
Yours
Pan