I suspect you might have relaced with one cross too many. Usually 28h wheels are laced 2x, and in some cases only 1x (but not laced over under).
If you've taken it apart, try lacing the right flange first. If 2x the crossing spokes have 2 holes between them -- one for the 1st crossing spoke, 1 for the spoke going the same way, and the 3rd for the 2nd crossing spoke.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.