The replacement parts for my single speed arrived. New chainring and cranks.

That’s obviously a job for the weekend, along with installing the new brake callipers that are sat waiting to be installed. First impressions of the new crank are good, it’s quite light, and stiff and looks good.
So, time will tell how it works out of course. I got round to fitting the new callipers, however, the front cut down on the available space for the mudguards. I had to cut the front off the guard, so it ends just behind the Caliper. Only time will tell what difference this makes, but it has the added benefit of stopping the rubbing that no amount of tweaking cured.
Shouldn’t be a issue, as the spray back should be caught by the rear part due to tyre rotation.