Both masters are from Autozone. They appear brand new but they may be rebuilt. I don't see how I could have 3 bad masters though. The break lines are name brand steelbraded lines. No visible wear. I was talking to a buddy and he suggested that it may be the calipers on the front axle. I don't know how these would fail though. They are not leaking fluid and when I bleed them air dosent seem to come out any more.