absolute rest positioning

[David Bobroff]

 Is there a straightforward way to position rests by using an absolute 
offset from the center of the staff?  I have a measure with cue notes 
and main instrument rests beneath.  The problem arises when I transpose 
the instrument.  The cues need to stay where they are, which is working, 
but if I position the rests with <note>\rest the rests will be 
positioned correctly for one transposition but not the other.  Should I 
just use \tag for this?

-David