So having an issue with the brakes on the car. It seems as you drive the car, and use the brakes, they slowly keep clamping tighter and tighter, so like after the first 2-3 stops the brakes are almost engaged enough to stop the car on their own. When you pull the vacuum line from the booster, they go back to normal, plug it in and drive a couple stops and same deal. I'm guessing a booster or master cylinder, but any other ideas?