David,
I was just re-reading your original message; is this what you were trying to do?
!NoteWorthyComposerClip(2.75,Single)
|Chord|Dur:8th,Triplet=First|Pos:0|Opts:Stem=Down,Beam=First|Dur2:Half|Pos2:0
|Note|Dur:8th,Triplet|Pos:0|Opts:Stem=Down,Beam
|Note|Dur:8th,Triplet|Pos:0|Opts:Stem=Down,Beam
|Note|Dur:8th,Triplet|Pos:0|Opts:Stem=Down,Beam
|Note|Dur:8th,Triplet|Pos:0|Opts:Stem=Down,Beam
|Note|Dur:8th,Triplet=End|Pos:0|Opts:Stem=Down,Beam=End
!NoteWorthyComposerClip-End
Of course with this technique, both noteheads will be visible.