Hi Josh,
Cute tune, isn't it? I like your use of the triplets - are they notated that way in the original?
Your problem is just the position of the Segno. Move it ahead of the Master Repeat Open. I think that'll work.
Where you had this on your top line:
!NoteWorthyComposerClip(2.0,Single)
|Clef|Type:Treble
|TimeSig|Signature:Common
|Tempo|Tempo:146|Pos:22
|Text|Text:"C F/C"|Font:PageTitleText|Pos:16
|Rest|Dur:Whole
|Bar
|Text|Text:"C7 F/C"|Font:PageTitleText|Pos:16
|Rest|Dur:Whole
|Bar
|Text|Text:"C F/C"|Font:PageTitleText|Pos:16
|Rest|Dur:Whole
|Bar
|Text|Text:"C7 F/C"|Font:PageTitleText|Pos:16
|Rest|Dur:Whole
|Bar|Style:MasterRepeatOpen
|Text|Text:"C"|Font:PageTitleText|Pos:16
|Flow|Style:Segno|Pos:7
|Rest|Dur:4th
|Dynamic|Style:f|Pos:-8
|PerformanceStyle|Style:Legato|Pos:10
|Note|Dur:4th|Pos:1^
|Note|Dur:4th,Triplet=First|Pos:1|Opts:Stem=Up
|Note|Dur:8th,Triplet=End|Pos:-1^|Opts:Stem=Up
|Note|Dur:4th|Pos:-1
|Bar
!NoteWorthyComposerClip-End
you just need to have this instead:
!NoteWorthyComposerClip(2.0,Single)
|Clef|Type:Treble
|TimeSig|Signature:Common
|Tempo|Tempo:146|Pos:22
|Text|Text:"C F/C"|Font:PageTitleText|Pos:16
|Rest|Dur:Whole
|Bar
|Text|Text:"C7 F/C"|Font:PageTitleText|Pos:16
|Rest|Dur:Whole
|Bar
|Text|Text:"C F/C"|Font:PageTitleText|Pos:16
|Rest|Dur:Whole
|Bar
|Text|Text:"C7 F/C"|Font:PageTitleText|Pos:16
|Rest|Dur:Whole
|Flow|Style:Segno|Pos:7|Placement:AtNextNote
|Bar|Style:MasterRepeatOpen
|Text|Text:"C"|Font:PageTitleText|Pos:16
|Rest|Dur:4th
|Dynamic|Style:f|Pos:-8
|PerformanceStyle|Style:Legato|Pos:10
|Note|Dur:4th|Pos:1^
|Note|Dur:4th,Triplet=First|Pos:1|Opts:Stem=Up
|Note|Dur:8th,Triplet=End|Pos:-1^|Opts:Stem=Up
|Note|Dur:4th|Pos:-1
|Bar
!NoteWorthyComposerClip-End
Don't forget to move the Segno on all the staffs, and to change its properties to "at next bar."