If it's an optical illusion (to me) then disregard my comments. From your posted picture, it appears the build is all over the place, nothing symmetrical that's typical of a traditional wheel build. Unless it's some boutique spoke pattern that wasn't mentioned or the wheel builder used too many crosses for that large hub flange to rim size that the spoke(s) and nipple(s) end up at severe and stressful angles even before tensioning.
It's almost like a 40+h hub being laced to a 36h rim, from the old days when some used mismatched components and made it work (kind of).
In any case a complete rebuild and rethink of how many spoke crosses are necessary would solve the problem regardless of the spoke type (butted or straight gauge) used.
Last edited by Sci-Fi; 02-12-18 at 04:15 PM.