No real trick, just another step. I just built up a set of 819's. What hubs/spokes? Regular J-bend? You have to put the nipple seat/coller on the spoke first, then the nipple threads loosely onto the spoke so you have plenty of play. Then the nipple seat is threaded into the rim snugly (must use loc-tite and a special tool). Lace up and true/tension as usual. Let me know if you need a hand, I have everything here.