THAT is one of those "things that make you go "Hmmmm", for sure. Have to process that for a bit; when I did the stock SD spinner for the Extra, it was more out than I thought. Bob's article makes sense when in the context of very tight machining tolerance and materials consistency.

But - on the "other" than his spinner - I'm tending to think a little "fixing" to get it closer is better than NOT fixing.

Thoughts, anyone?