Another option for nailing go-go on an arranger without a custom style, especially on the BK-9, might be to hunt some go-go audio drum loops down and use the Key Audio function to add them to a style with the drums and percussion style track muted.

Don’t forget, if you don’t want to lose the top octave to trigger notes for the loops, they can always be assigned to an FC7… A bit safer choice, IMHO!

(In fact, there’s several nice clean loops to be had from this video if you chop the audio up. Just remember copyright rules, no commercial recording use without permission…)