mag mount cable runs?

I recently had a coax failure (at least it sure looks like one) on a
vehicle magnetic-mounted antennas cable run (the 10 foot LMR-195 or
whatever it is between the magnetic base and the N-connector).  One
day it was fine, then next I noticed about a 20 dB attenuation.  It
looks like the failure was due to being pinched in the trunk lid for
an extended period of time (I left it on the car for about a week).
Btw, for comparison, I tested my "backup" mag mount I had purchased
from Scott Brown some time ago and discovered it too had a substantial
attenuation (that's okay, i got a good deal anyway ... i think).

I have googled around and not found any specific advice about how to
protect coax from these pinch failures while maintaining a reasonable
seal between inside and outside the car.  I'd rather not ruin more of
these things.  Knowledgable and/or experienced advice, please?


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Russell Senior, Secretary
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