Also, for those interested, I tracked down and exert from The Barnett Manual.

They tell me to measure the fork tube and minus the head tube. Straight up. Of particular interest to me is the dimension "C" in regards to measuring stack height of the headset. As such, the do not include the section of the lock nut that is above the threads. This is the section I was assuming the 1-2mm tolerance would factor in. Is the way most companies are measuring their posted stack heights?


Interestingly, I looked at the Tange Levin NJS headest on their on website. Here the clearly list the stack height as 28.2mm, but when you add up the numbers on their diagram, we get 37.9mm. Weird.


I think I need to quit this and buy the shorter one. haha.