Rosenfritz,
Is it anything like this?
Video:
Video posted by Doc some time back!
If so, there is some discussion about it here.....
https://www.feldoncentral.com/forums...ead.php?t=4403
ps. BTW, Don't think that I'd deserted the madhouse
completely!.
. We've bene quietly celebrating an anniversary, in the Cotswolds.