well you can place notes independent of snap, so you should be able to size any note to any size, and plce that in any pos:
manual note size:
*grab right end of note and make sure you can size it
*hold mouse, and press ALT.
*Note can now be arbitary sized to any size. The size is also 'last-note-size'
Placement (almost the same)
*Grab note, and make sure you can move it
*hold mouse, and press ALT.
*Note can now be places arbitary
Is that solving it?