[rdorman]

Roscoe once again brought up a good point. On a new system, master cylinder R&R you should 'bench' bleed the master cylinder. I just by a pre-made length of brake line, cut it in half and curl it around so that it empties at the bottom of the reservoir. You can do this on the bench in a vise but I generally mount it to the car and do it that way. This could point out an area that certainly seems to have trouble since you can not get the peddle to return. The ports could be clogged or there could be no return spring in the master cylinder, etc, etc. If the master cylinder won't bench bleed, it sure as heck is not going to work on the system!
Rick