+1 on the 36mm six sided socket. AND an impact wrench. I used to torque the cap nut to specs. Then I read on here somewhere more than once about using impact wrenches that approximated the appropriate torque to tighten the cap nut. I happen to have one impact wrench that fits the bill with both a "soft" setting and a "not terribly more powerful" setting. (I have others that are a little too powerful for tightening but great for loosening). The plus side of using the suitable impact wrench to tighten the cap nut is that I avoid the risk of tweaking the fork tubes out of parallelism by holding them while tightening the cap nut. Very little leverage required to hold the triple trees when using the impact tool.