No problem . Another SOTW member (forgot who now) pointed that fingering out to me when I bought my Couf and was have a hell of a time with altissimo G! Someone else mentioned adding the side A#, (I was still having split tone problems) to clear it up, so between two people, I got it! Love this site! Similar fingerings work my Conn soprano and French Vito Alto (neither have the F# key, so the fingering is modified, but is still similar).
Sure thing Finger "B", high F# key, and side A# key (adding the RH side A# helps prevent the G from splitting).
XOO/OOO side A#/high F# key
Sometimes XOO/XXX will work too.
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