I am trying to learn how to rebuild the Saginaw model .94 power steering pump. On the one I reassembled today, I have about 1/8" of end play on the pump shaft. It doesn't seem like it had this much end play before, but I could be wrong. Is this too much end play? If so, can you kindly suggest what I might have done wrong in reassembling it? No parts were left over. Thanks very much.