Me being pernickety again, but it keeps me out of trouble...
Tidied up the air box only to discover 1 of the 3 x rubber washers that slip over the pegs on its base had gone AWOL with the remaining two cracked or split.
More or less an exact match available here on eBay for loose change if you're interested -
eBay (https://www.ebay.co.uk/itm/Rubber-Washers-26mm-od-x-M8-x-3mm-Thick-Please-select-your-quantity/224302162095?ssPageName=STRK%3AMEBIDX%3AIT&var=523092676753&_trksid=p2057872.m2749.l2649)
(https://lirp-cdn.multiscreensite.com/521a0932/dms3rep/multi/opt/1-7c0d31e1-1152w.jpg)
(https://lirp-cdn.multiscreensite.com/521a0932/dms3rep/multi/opt/2-1c1a3d67-1152w.jpg)
(https://lirp-cdn.multiscreensite.com/521a0932/dms3rep/multi/opt/3-d3d39432-1152w.jpg)
Good find.
Looks like those chappies will do for the bottom radiator "pegs" where they slot into the holes in the cross member.
Just checked, seems they do... certainly fits the bottom pegs on a boxed Hella radiator, obviously cant speak for other makes.
https://www.brickwerks.co.uk/radiator-mounting-washer-t3-caddy.html
171121276D
Should've bought 100 and turned a tenner into £75 quid!