Police Surplus PP: Assembly and clamp suggestions

[halfmoonclip]

Mike, I'm off topic here and it is grist for another day; a buddy and I are off to a shooting course (after 45 years of pulling the trigger, I guess I'm going to learn how, or maybe more important, when).
When I return, I'll dig out my PP and have a longer look at it. Mine came from CDNN not two years ago, great shape and not much money. Had one before that was more of the same, purchased locally maybe 15 years ago, and again it appeared to be one of a group the dealer had scored, not a lone example. Maybe I need to ask of other members what their experience has been in acquiring these guns; unhappily, you're certainly right that the supply won't go on forever.
Full agreement on cheap tools; I've had a Lyman and Dillon marked vernier, Chinese, and they have been okay, but I want a really good one.
A machinist friend said that his plant insisted that the same guy take all the measurements on a job, due to the 'spring' you mentioned, and just how forcefully the measurements were taken. Having only one hand doing it all reduced the error, or at least made it consistent.
Moon