Check to see if "numbers" have what appears to be a leading or trailing
space.
If yes, then edit the cell, paint through the "space" and press Ctrl+C to
copy, then press Escape

Next:
EditReplace
Find What: Click this field and press Ctrl+V (to paste in whatever the space
character is)
Replace with: Leave this blank (or delete it's contents)
Then click Replace (to make sure it's doing the right thing)
Then click Replace All

Does that solve your problem?

Ron