I'm having a weird issue.  Whenever I write an F# in the staff for the bass trombone line, the playback is sounding in octaves......I hear an F# in the staff along with the higher octave.  This is the only F# having this issue, the one in the staff.  I'm running Windows 7 Pro and COMB 2 with Finale 2014.5 and it's the "Bass Trombone Solo KSm" Garritan sound I'm using.  It's happening with the Standard and Notation version of the sounds.  I prefer to use the COMB sounds for bass trombone because the default Finale Garritan bass trombone sound is so awful. 

Thanks.