[427sharpe]

I dont know too many of the details, but it sounds as if a caliper may be beginning to seize or a proportoning valve going bad. Did you leave residual pressure valves in the system? What kind of brake system are you using? What kind of master cylinders, etc? I have seen a caliper locking up cause the same symptoms...it doesn't release the way it should, and takes a little bit of time to let the piston retract into it's bore. I have had this happen when the ring seal inside the piston bore 'flips' or gets kinked. The seal is actually bias cut to help the piston retract, and if it begins to fail it will keep the piston engaged to the rotor. Was the car pulling to one side, or was one end of the car dragging? If both fronts (or rear) were maintaining pressure, I would bet on a e brake misadjusted, or a proportioning valve or master cylinder failure (assuming that you have dual brake master cylinders). A long shot would be a maladjusted bias bar if you are using twin master cylinders...if the jam nuts were loose and let the bias bar shift it will hold pressure against one master or the other. Sounds like you have some brake diagnostics ahead of you! Good luck, and repost details if I can help out at all...