I decided to copy this here. It is an extra tip that I now include with my own Stealth 2Box HH stand conversion kits. I haven't played the stock 2Box Hi Hat for a long time so I can't compare side by side, but I can say that this little extra step is something that I always do with my own Hi Hat. Hope it helps.
The way I set up my HH calibration includes one little step that was included in the earlier operation manual. First do the HH calibration as explained in the 2Box manual or if you are using my own HH stand conversion kit follow my instructions. And after doing the calibration: With your foot off the pedal and the HH cymbal in the open spot; Hold onto the HH rod, and loosen the clutch nut being sure the clutch and cymbal do not move while loosening ...... then raise the HH cymbal/clutch position...... try about a quarter or half inch ..... Tighten that clutch nut with the cymbal slightly higher like that after calibration ...... For me it makes the HH work much smoother/natural, and HH foot splashes and foot chicks smoother too.
Here is that original tip from 1.24 manual: Finally fix the hihat at a (possibly higher) open position which suits ones playing style.