Had some on and off PS fluid leakage and noticed the hydroboost had some leakage. broke down and just bought a new hydroboost to take care of it. installed it yesterday. Had to reuse a couple things from the old part, one of which is the little black box on the driver side of the booster that has the clamped line coming into it. Well I took it off the old and put it on the new, the o-rings looked fine so I reused those. Now it's leaking pretty bad underneath where this "black box" connects to the hydroboost. Where did I go wrong? also, when I bleed this, what do I loosen? I drained the reservoir and plugged it back up. Can I loosen a line on the booster and keep the car running, turn the wheel back and forth and just keep a flow of new fluid going in until it runs out clean?