I have a two position Wisner that Jim Kobe put on.
I have a two position Chapman that I put on with Chapman tooling.
I have a number of Dumoulin 3 position that came with an action attached.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway
The man who makes no mistakes does not usually make anything.-- Edward John Phelps