That's the method I use.....also do that step in a large clear plastic bag, that way if you do slip the detent can't go far.I learned a trick for getting the pivot pin detent in without launching it into oblivion. Put in the spring and the detent. Hold the detent down with a dull razor blade or something else thin but strong. Slip the pivot pin over the razor blade and your done. I can't remember where I first saw it but I have never forgotten it. You won't believe how much tension there is until you try to hold that detent down.