Easter Monday 1974 or 5 Snetterton National.
My TD2B managed to break its' crank during practice so I was at a loose end for the day.
Lionel Horsnall (BSA) had managed to turn his outfit over at Bottom Bend (I believe) at Brands on the Saturday and his passenger was not in fit state to lay on the platform, drinking champers and eating grapes (as was my impression of passengering

).
I volunteered to stand in for the recently hospitalised regular. Practice was over by this time but we were allowed one lap prior to racing starting, not even flying lap at that.
The first race was eventful as Lyn appeared intent on making up for lost ground on the straights (despite the BSA engine being out at 860cc) by attempting to overtake by going straight over the opposition as this was the shortest line. We nearly looped at the Russell chicane (old Russells’) when I was a tad tardy shifting from left to right and the rear wheel lifted. We finished in the top ten, much to my relief (finishing at all).
In the second race we were further up the field, however as I wore glasses at the time I was lifting my visor along the Revett straight to push the lenses back against my eyes, when on about the third or fourth lap whist both hands were otherwise engaged replacing lenses I started to slide of the platform. I managed to get a grip back on only to find myself dowsed in hot oil as we ground to halt on the grass, to discover the cylinder barrels had parted company with the crankcases (not an unknown phenomenon with Jumbo BSA engines).
After two races I was shattered as despite being quite fit I was unused to all the upper body punishment.
Luckily Lyn usual ‘passenger’ was fit for the next meeting and my career as a passenger was over.