damn, that 5zigen and coilover go fuuuuuuccked up. Good to hear about your ISIS arms though.
Not sure about my old ISIS tension rods, they were only on the car a few months, I was driving on 95 just north of 195 or 395 i forget and I was switching lanes, hit a little bump or grate in the highway, nothing out of the ordinary. my suspension compressed, i heard a weird noise and scrape so i thought "fuck" and pulled over immediately. looked under the car and it was just dangling there, snapped right at the threads.