My girlfriend has a 1995 legacy outback wagon and the driver's front and passenger rear calipers are locked engaged. The calipers are good and of course release their pressure if i crack their bleeders. I replaced the master cylinder and nothing changed. The ABS pump under the hood has been seeping brake fluid and keeping the ABS light on so I had one of those laying around. Replaced it with high hopes but again nothing changed. Anyone have any ideas? Proportioning valve below the master maybe? I'm tired of just throwing parts at this thing. Help would be greatly appreciated.