The pan has holes that line up with the edge of the front of the bell. On the Speedo, was the whole plug taken out? If so, it needs to be aligned to the correct gear tooth count on the eccentric. I replace the O-ring if it's chewed up or you get a slow drip. Breaking your back is no fun. I broke 2 vertebrae years ago and they still hurt. Even worse now my right shoulder socket is broken as well as my left hip!