Don't unlace it yet. You'll have to later, but first take a moment to analyze the situation as it is.
When spokes come up different heights in the nipples like yours it's because the hub, rim and spokes are out of phase. When it's in pairs Hi-Lo alternating it's because the hub is rotated with respect to the rim and it can be corrected by slackening and re-tightening evenly.
But when they come up in 4 lengths it's usually because the spokes on one flange are out of sequence with respect to the other. Sight or lay a rod across the flanges and you'll see the the two flanges are half a spoke position apart so sequencing around the hub the spokes are right, left, right, left (radial) or right flange, counter clockwise, left flange cc, right flange clockwise, left flange cw. (it could also be the mirror image - R-cw, l-cw, r-cc, l-cc).
When you look across the spoke pattern just outside the flange you'll see that your aren't right which is your problem.
Usually this can be fixed by unlacing and relacing one flange only, but not always.
In your case though there's a second issue. Your spokes are too long. With the right length spokes you'd see half high and half low, since yours are all high and higher you need to figure out how much too long and re-lace with new spokes.
If there's a bit of tension you can average the various excess lengths and shorten by that. Or go back and check your spoke length calculations. My guess is that you used a 3x length and laced 2x, or something similar.
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FB
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Last edited by FBinNY; 01-29-11 at 05:07 PM.