Well, the hammer plunger was busted too, so got a new one.
They run long and not much good info on the web.
Compared mine to a pic of complete hammer on web, w same pin location.
Settled on a starting dim. Tried it a little long just in case, and it was.
Hit the dim I thought it would be and it was perfect.

Last edited by hookeye; 12/16/18.