George Tingsley wrote:
Dave Plowman (News) wrote:
[ snip ]
You on the other hand don't seem to be able to accept that over
tightening is bad news on compression fittings
Here a few more web pages that contradict your earlier advice that you
should

USE OPEN ENDED SPANNERS AND TIGHTEN THEM TILL THEY GROAN

[snip]

It's sort of possible that DP was referring to doing up fittings
until they make a sort of squeak, which clean brass on brass does
when under load. This "technique" isn't to be relied on, though.

It's always possible, having tightened the joint, to undo it and
examine the olive/pipe, doing the fitting up again with a small
extra tweak after (assuming everything looks OK).