So, I'm installing my KYB's and tightening the center nut which you use an allen wrench in the middle to loosen and tighted so the thread doesn't move. Problem is, obviously there is not a hex for an allen wrench on the KYB's because that's where you adjust the stiffness. The nut won't loosen or tighted and just moves the whole thread with it. Any ideas on how to tighten this? I don't want to take a vice grip and damage anything. Thanks!