Robert, Now that Special T is rebuilding brake calipers were learning more about them. If the system is full of fluid and all the air is out, then the only place the fluid can go is between the outer seal that attaches to the piston. It won't hold very much but if the seal is tight and the clip ring is in place, then fluid can go there. Then the other thing that could happen is the old rubber lines are swelling and not as stable as the new Stainless Steel Teflon lines. Then you have the fluid that passes buy the plunger in the master cylinder like the clutch when you step on the brakes. Most of those are a real mess. You might want to check it. You should be able to step on the brakes and the pedal hold. John Hervey www.specialtauto.com -----Original Message----- From: therealdmcvegas [mailto:DMCVegas@xxxx] Subject: [DML] Squishy Brakes. Last August, I replaced my Brake Master Cylinder, and also flushed the entire hydraulic system with Castrol GTLMA (as stated in a previous post). And everything has been fine since then. Until last week... Car slowed down fine, and performed great. However, when I got out, I could smell that the brakes had overheated a bit, from the stench of burning asbestos. Ever since then though, my brakes have been "squishy". The pedal doesn't catch until it's about 2/3's of the way down.