Rear Wheel
I’ve noticed the squeek other have in the rear brake. And I checked it well with the 1000km/safety inspection. Today however I noticed that the rear wheel is not quite aligned. I’ve not removed it, so it is how it came.
To remove the nuts on the right side took a big leaver - damn they were nice and tight. Removing those, and the extra twist nut, I was able to align the wheel better, re-tighten, and of course most importantly test the brake.
Then re-tension, and apply the lock nut, and the extra nut to screw. Be careful of the 10mm screw, it can not cope with a full strength tighten and will strip the thread if not careful.
Once I got it back together, tested it on the stand, I took it for a test ride. The rear wheel is not making anywhere near as much noise.