Job done: Magsafe 2 adaptor glued to slightly faulty Magsafe 1 MBA charger & damaged insulation fixed with heat-shrink tubing.
Found hiding in a cupboard: the original power brick for the previous MBA: one of the five spring-loaded poles in the L-shaped Magsafe 1 tip was stuck down, unable to complete the circuit when in "cable behind" the laptop, only worked in "cable beside" orientation, which then prevented use of the adjacent USB port. I had to replace that adaptor.
But the newer MBA has the Magsafe 2 connection & $12 will get me a Magsafe 1 to Magsafe 2 adaptor, I'd be able to use the old dodgy Magsafe 1 tip on the new MBA effectively because the adaptor can be reversed, uncovering the USB port.
Just back from the weekly darts game. Did really well, played four games, won three of them.
Just sent an angry email to the ambulance mob who sent me a final demand for payment. I was angry because the final notice was the first correspondence I ever received from the bastards. I paid the bill.
Every so often Apple Music throws up a gem, I followed a Gordon Lightfoot link the find this rattling good Space opera- style folk song:
https://itun.es/au/Y2TWfb