Hi guys, I have a problem. I have a new master cylinder and two rear wheel cylinders (using original lines though) for my 1951 Chevrolet 3604 (3/4 ton) truck and want to know if I would be better off simply draining the entire system or bleeding each wheel cylinder area as I replace the wheel cylinders. I am really tempted to bleed the whole thing and replace all of the fluid. Thanks in advance for your suggestions! Wada