Sorry Bob, I’m confused about your use of a tapered pin and how you use it. Could please clerify?
It's not hard to do. I drill the frizzen while it's held to the pan by
going thru the pan arm or bridle,in one side and out the other.
Then I use the taper pin reamer from the BACK side thru bolster
and insert the pin. It's simple and there are a bunch of my flint
locks around (I hope)with this simple idea in use.No threading or
broken taps and a VERY precise pivot pin matching the hole it sets
in.Same idea on the linked tumble.Ream the back of the arm all
the way thru including the link for the mainspring. On BOTH these
applications the large end of the pin is captive,the frizzen pin against
the barrel and the link pin against the lock plate.
A word of caution,the link pin can FALL OUT when the tumbler is
removed and it's tiny and can disappear on a shop floor.
I hope this clarifies my use of this pin in a gun lock.
Bob Roller