While on the subject of brakes, Just be mindful of the guide pins as shown. I had a bad experience on a recent ride and I had only one side of the pair of pads working due to the guide pin had seized and rusted and went un noticed as it was a gradual thing. It also meant that extra strain was put onto one side of the disc. The rubber boot had moved or was never sitting correctly and allowed the ingress of moisture behind the rubber boot. I ended up purchasing a new rear assembly. Not sure if anyone has had this before but keep an eye on it and check that it travels freely.
