So, I used the pro wheel builder spoke calculator to determine the length of my spokes. Running alex advent. 700c on a Shimano deore xt fh-m756 a hub. The calculator lists a shimano deore xt mbut not a765756. it ALSO lists a shimano xt fh-m 756 (without the word deore) I figured surely this was my hub, since the numbers were exactly the same. it calculated a spoke length of 290 and 291 which I ordered. But in building my rim the final spoke insertion (three cross) was too damn long! By like 3 or 4 mm. Is that because I used the wrong hub in the calculator if so, why dont they list a shim.deorext fh m 756? And should I just buy some damn calipers and calculate the spoke length myself?? I continue to be amazed by how confusing and un-uniform and un-systematic bike parts are. Clearly, they were not developed by mathematicians.