Just finishing up replacing all brake lines and hoses from master cylinder to the rear wheels (PITA in the rust belt!!) - can I bleed just the rears? Or do I need to do the fronts as well? I am aware of the proper sequence, but I am under the impression that the fronts and rears are separated in some way as a safety measure in case you lose a brake line. I've bleed only the fronts before, and that was no problem. Any input is appreciated. Thanks!