After a few little mistakes like forgetting to size one or two cases only to realize when the bullet seated way too loosely, I began developing a very rigid Method of Procedure with a few safety checks along the way.
I still have a lot of room for improvement. But, my quality/consistency is improving.
My wife loves to interrupt right in the middle. ...plumbing, 5th grade math, leaves in the rain gutter, it's always something that can't wait 2 minutes.