just did a little investigating on my sticky brake pedal issue. i applied the brakes (car off and cold) the pedal stayed down. while it was down i slid the master cylinder off of the booster and the pedal stayed down and the stop lights were still on. unfortunately theres no pedal return spring on the 93
i mite have to remove the booster and enlarge the mounting holes (tight fit) to allow a little wiggle room because connecting the pedal linkage was a struggle. my guess is if it was a struggle to connect it might not be perfectly centered causing resistence on the linkage thus not allowing it to return on its own