I bought some 98 from lovely old couple at the servo up near Forestech, and have nothing to complain about, FWIW.
If your ears aren't good enough to hear pinging, then don't tune it on the razor's edge!
Oh dear, that video is embarassing.
My abysmal approach speed is a combination of a rubbish tripmeter, incorrect memory of the road from last time, and general rustiness.
At least you can hear how badly it falls off song on the gearchanges.
Thanks Mick.