[john70t]

Never run into that situation.
With the wheel off, you should be able to hook it into the hub and push it through.
This might require loosening all the other spokes and starting over from scratch..but so be it.

Do the four directions equally very carefully so no run-out or oblong until finger tight.
Then do the ones in between the same until all begin to get snug.
Then incrementally tighten all.

It takes a long time to do spokes. Not a pro at lacing but done a few.
Get comfy with a nice seat and music.
After loading something will probably shift and need more fine tuning. Small adjustments are better.
Put some blue tape to mark the start/stop of rim wobble.