"Dual crimp" coax connectors?
Any time you nick a solid copper wire it will be severely weakened and
will likely break.
Dittos, can short internally too.
If it is anything important, the cable should be swept or at least checked
for return loss at a higher frequency. Just in case the parts were
mismatched out of the bag. Quality control can be a batch problem even in
the high end stuff. Good help is hard to find.
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