It’ll be tomorrow morning now. The rear mudguard on my bike has, somehow, rotated backwards around 2” - the being the distance the clip is now above the chainstay bridge. Hmmmm. Perhaps not unconnected with the rear ‘guard being so full of mud (I run 28mm tyres with guards where the recommendation is 25mm, and truthfully it’s bloody tight clearance) that it virtually jammed the back wheel. My “ministrations” roadside might have caused the issue.
ETA
Well that did get fettled today - deflate tyre, remove wheel, prise open the guard clips at the brake bridge, loosen the stay bolts, and push guard back into position with the clip over the chainstay bridge. Clips re-crimped and stay bolts tightened. I've not bolted the guard at the chainstay bridge, as it's already tight to remove the wheel, but may invest in a panhead for future fettle.
Wheel back in, and because it was deflated already, valve core out and topped up sealant. Did the front too.
Then I cleaned the chain (after bodging my Park Tools chain cleaner because the retaining clip assemblies had disintegrated
and also the jockey wheels and cassette.
Then Muc-Offed and washed the bike, so at least the cranks are reflective not matte now!
GT85 spray on SPD's, cassette and mechs. Wet teflon lube on them after. Chain got a dose of (the no longer available it seems) Finish Line Century Wet Lube. I like this - a foaming pink spray with good penetration. Jockey wheel bearings got a dose too.
Then I decided the rear guard was still too close to the tyre, so out came the 8mm spanner and off came the guard stay caps. Loosened nuts, hauled guard up 5mm or so, and retightened. Much better.
Then went for a ride.