The master cylinder started to slowly go bad. Easily replaced it myself in 2 hours. Brakes grabbed really bad after that, so I replaced it again thinking it was a bad part. This helped, but the brakes grabbed after stop and go traffic. Turns out the push rod in the booster was out of adjustment. Loosened the cylinder to make a temporary fix. The stuck brakes ruined the calipers, so I replaced those and sold the car to someone that would restore it.