Hi All,

Hoping a pro wheel builder can give this novice some advice

I'm building my second set of wheels ever. First set came out perfect. NOS Campy Chorus hubs on Mavic A719 rims for my tourer.

This time, I'm building wheels for my commuter and decided to take advantage of the disc brake mounts on my frame.
So I purchased a new set of Shimano Deore XT centerlock hubs and some Velocity Dyad 700c rims (Australian made).

I measured the hubs and ERD and entered the info into Spocalc. 32 Spokes / 3 cross
Front Hub Shimano HB-M785

Measurements for the front wheel are:
N, total number of spokes 32
ERD, effective rim diameter 596.0
OSB, offset spoke bed 0.0
WL, width from center to left flange 22.7
WR, width from center to right flange 34.2
dL, left flange diameter 44.2
dR, right flange diameter 41.2
S, spoke hole diameter 2.6
X, cross number (decimal allowed)(optional) 3.00
WL_effective = W + OSB 22.7
WR_effective = W - OSB 34.2


And the calc spit out: 289.8 for the Left and 291.4 for the right

SO, I got 290 Spokes for the left, and 291 for the right

However, after installing the first 2 sets of spokes, the third set seem to be too short to thread into the nipples.

WHAT HAVE I DONE WRONG? :'-(