This is most unusual, we have mounted dozens of SS/teflon lines with no failures.

However SS/teflon lines do not like to be kinked or twisted. Putting a twist on the line during installation is fairly easy if installation is rushed.......

Tighten the new line into the caliper first, leaving the chassis end free.

Then loosen the chassis side brake line connector from its bracket (the big nut). Then loosen the chassis side hard line from the connector so you can rotate the connector. Both of these loosening actions require two different sized spanners.

Then by rotating the connector, tighten it onto the chassis end of the new line. Give the whole line a good shake to relieve any tension/twist, then without rotating the connector tighten up the chassis hard line and finally the large nut that holds the connector to its bracket.

Regards,
bobf

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