Hi all, I apologise if this has been covered in other threads but I've looked at quite a few and none of them fully answer the question. Firstly, my rear rotor is pretty scored and in need of replacement and I'll change the pads at the same time. How easy is this to do yourself? I haven't worked on brakes before but I think I could handle it. Just wanting to know if I'll be getting myself in deeper than I think. What do I need to look out for/take note of. Secondly, my front brake squeaks when braking so I guess I can change the pads at the same time as I do the rear. BUT sometimes there's also a kind of light grinding noise while riding at normal speed. I'm not sure if it's a warped rotor (I'll do a bit more troubleshooting to find out) but is this a huge issue? Advice is much appreciated!