Hey Brent,
                      Sorry to read it was your master cylinder [as I
suspected].  Don't screw around with rebuilding one with 200,000 miles
on it, unless you cannot find a new one for a reasonable price.  There
can be wear patterns and/or corrosion pits that will defeat your best
efforts.  If you have to go the rebuild route, send the cylinder body
to one of the shops advertising in HEMMINGS, and have a stainless
liner installed.

Two cents worth from my experience.......

Glenn