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>OK! My little experiment was valid, but I agree that it was the wrong
>experiment!  I have turned around to becoming completely convinced, after
>doing some more thought experiments.  Ted has accurately portrayed the
>situation, and I hope that we don't have to beat on this any more!
>
>Pops
Pops!
you made me think a little harder, so it wasn't wasted effort.
When you back off the lock nut the tension won't change, the nut just 
behaves as a washer until the thread starts to bite in the opposite 
direction, Ted put it slightly differently but said the same thing I think?
Graham 
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