IIRC This outline was written by Richard McDonough so not sure how he does his.
In the past, my local machine shop did any I needed.
You might reach out to Rob he now owns/runs Woodland Sports and should have any/all related info on this process.
https://www.facebook.com/Woodland-Mo...location=group
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When I die, I want to go peacefully like my grandfather did, in his sleep.
Not screaming like the passengers in his car.