Hi all, is it hard to overhaul the rear discs on a 325, ive noticed that the rear left disc is getting hotter quicker than the right, so maybe it needs a overhaul, is it hard to do? or should i take it to a mechanic. Also i think possibly i have a bearing out on the same wheel, but im not sure if the noise im hearing is the breaks on this wheel, any help would be appreciated :P