Did a SAS on my '94 Explorer years ago and the brakes were always mushy afterward (build thread in sig). Axles were a Dana 60 and Sterling 10.25" from an '87 F-350. I put a new master cylinder for a '79 Ford on and bypassed the Explorer's ABS pump. Finally lost brakes the last time I had it out 2 years ago and it's been parked since (too many other priorities). Finally noticed it would leak brake fluid from the driver front caliper and passenger rear wheel cylinder after sitting a while. My wife and I replaced both calipers and wheel cylinders (and rear brake shoes) and we bled the system this morning. Still seems to have the same problem--firm pedal until you start it then it goes to the floor but the brakes are still working but I haven't been able to really test them yet (I have to get a Jeep moved out of the way to really drive it). I'm stumped about what the problem could be. I'm left with line diameter too small since they're the Explorer's 3/16" lines. Any other ideas?