wrote:

Well, I apprenticed as a mechanic, so must of the tightening I do is by
feel. If it feels tight it is tight.

Me too. As an Agricultural mechanic, so working on compression fittings
on hydraulics etc for numerous years. It's not a new science for me,
just seems that the last batch of isolation valves I picked up seem to
have given no end of problems WRT leaking.


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