Hi Garfield,
Thanks for your reply. I'm cross with myself for never checking out what the Model CV input did, but it's a nice surprise. All manner of fun with that one. It's one of the things I really like about modular is the constant learning journey. Keeps my tired old brain active. Kind regards to you too.
p.s. I'd like to read your review of the STO when you have the time to finish it :)