I have a remanufactured Saginaw p/s pump that came with the woodruff key in a small plastic bag. I got it to sit in the slot by hand and then I gingerly began to hammer on it but it does not go down any further. Don't want to peen it over or anything, so I stopped there to look for help here. What is the best method? (it looks like it has a long way to go) Thank you.
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