Originally Posted by urbanknight

Is the rim brand new and did you verify it was true before you started building it? (Placing it on a glass table top is the best way to check this)

If the rim is used or slightly warped to begin with, you have no choice but to build with uneven tension. If the rim was in good shape, it shouldn't vary by much more than about 10 kgf (spokes on the same side only) unless you brought it up to tension incorrectly.

It sounds like you started off correctly, though. I thread them on lightly, then go around turning them until the threads are just covered (unless that starts to add noticeable tension, then I go back and expose 2 threads on each), then I tighten them up 1/2 turn at a time until they are close to desired tension. From there, I true round and then side, and check the tension periodically. I'd rather have a 1mm wobble than go beyond the 10 kgf variance.