I studied the manual and the excellent write up I found here (author unknown?), and now I am in the process of flushing the brakes. So far I have flushed the front control circuit, which I suspect is for the first time by how dirty the fluid was. For the brake circuits, the procedure calls for use the brake servo motors to pump the fluid while bleeding at the calipers. If possible, I would rather use my hand vacuum pump to vacuum bleed at the calipers since that seems much easier to control. Is there a reason not to do this?