Originally Posted by
CliffordK
Take the wheel back to the builder.
Some rims have Right/Left nipple holes. Some don't.
So, if your holes are right/left (either location, or drilling direction), and they got it built backwards, then you could have serious issues.
If it was done wrong, I'd insist on all new spokes.
This is probably what happened. That hub has pretty wide flanges, so the spoke hole angle error at the rim is going to be increased compared to a "regular" hub, even on a 622/700C rim. Butted spokes will not help if this is the problem.
If the spoke hole angle mismatch isn't the problem, the spokes should get a "correction" in them before final tensioning. I like to do that right after lacing, in fact. If you bend the spokes a couple inches above the threads so the nipple comes straight out of the rim, the bend will help move the stress away from the threads even after the wheel is tensioned.