Roger, have you tried adding a triplet sound with a guitar arpeggio or a piano playing triplets? Or the drums; not to effective.
You can add the triplets in one of the Accomp. tracks or in one of the pads. Try writing it in step time; kinda easy.
I went through all the 6/8 rhythms in my Kn7 and the Pa800 - very basic ----- just adding triplets should do the job. Adding triplets to the intros and ending might be a different job.
Roger I listened to the song, “I’d rather go blind” on YouTube – it is so simple – the triplets are played very softly in the background. By adding triplets to a rock ballad that fits the song best should do what you are looking for.
Take care, John C.