I have a 1990 range rover that I bought without brakes. I replaced the booster, the pump, and most of the lines, and have brakes again. However, there braking distance seems a little excessive still, and there's a *pop* *pop* *pop* to the brake pedal when the brakes are applied. any ideas on how to fix it? It also doesn't seem to like to shut the pump off, which is probably the relay switch, but haven't tried to mess with that aspect of it yet.