Where do I find parts for the HH?

[67 evil eleanor]

Found the problems with my HH on the Deuce. Now I need to know where to find parts to repair it. I need the button, retainer, "bowtie" drive washer and would like to have a new plunger shaft. Also the O rings from the same supplier (have seen them in another thread). I "think" I can make the repairs here at a minimum cost instead of buying a rebuilt or new HH. Thanks for your help.