When I do a fermata, it is never right about the note. How
can this be achieved, if it can?
I put the fermata right before the note, and un-check "preserve width." This seems to work reasonably well when printing.
I haven't had problems centering fermatas over notes, but I have had problems getting them to center over a whole rest. It looks OK on the staff editor, but it is off on the printout.