Originally Posted by
FBinNY
The second possibility is that you have your flanges phased wrong. Sight straight across the hub looking at the near pairs of spokes going in the same direction. If the one in the left flange is to the left in the hub, it must be to the left in the rim. This kind of error is what causes the long-short-long-short kind of problem people often encounter.
+1. That's my bet. It comes up more often than you might expect.