the other thing you can do, if you really want to clean and pack them right, is to go to an auto garage and get them to press the stem through the bottom triple clamp, that will force the bearing off of it's inner race, then clean it, re-lube it, and press the steering stem back into the clamp, then use a long press die, to press the bearing (press it on the inner race) back onto it's seat. you don't have to do this when you are just re lubing them, but that is the procedure for replacing them.