r4ptor, I tried your suggestion but I couldn't get a strut to attach to Not-Rockomax. I am changing my design. I am trying to use struts as little as possible so I can keep the crash tolerance closer to the 80 m/s that the I-Beams have, since this is for a rover\base. As Red Iron Crown said it is the worst limitation but you just got to get creative and build around it.