I am installing disc brakes on my 1966 Galaxie and during the process, I
must have pushed the brake peddle down with the rear brake lines attached
and the front brake lines not attached.  The master cylinder is working the
rear brakes but not the front.  How do I "re-set" (for lack of the correct
term) the master cylinder so both chambers are working?  My master cylinder
is a newer dual chamber type from a four wheel disc brak Lincoln.  I ran my
test light to teh brake switch on the proportioning valve, and the test
light lights up, confirming the fact that I pushed the brake peddle with the
rear lines connected and the front disconnected.

Here is my set-up;

Front spindles, calipers, and discs from a 72 Torino
Rear calipers with emergency brakes from a 85 Cadilac Seville
Rear rotors from 85 Lincoln
Master cylinder from a mid 70's Lincoln Mark
Proportioning valve from MP Brakes - GM style
All parts, aside from the spindles, are new or remanufactured

Thanx in advance