Ahh, rotors do go out of true when you hit a tree wit them, i tell you that :P and the main problem with hydraulics is when air gets into the system and they get all spongy, and bleeding is a bloody hassle, DOT fluid everywhere...
if you dont know what youre doing it is yeah, it is like anything, watch an expert, then have a go at it.
if you dont know what youre doing it is yeah, it is like anything, watch an expert, then have a go at it.