"CW" writes:
"alexy" wrote in message
.. .
Tightening the nut is much easier than moving the head on a lag
screwg. Much easier to make fine adjustments on a machine thread
than on a coarse lag screw thread.
--
Alex -- Replace "nospam" with "mail" to reply by email. Checked
infrequently.


Very true but this has nothing to do with my response to redbelly.

So, instead of belittling what the OP had said, why didn't you
offer an alternative explanation rather than the rather trite
"try again"?