OK - aren't we the smarty-pants, but just in case anyone wants to know, we have two corrections for the 20 rhythms book (thanks Erik & Cheryl), which I've let Kelvin know, but seeing as it's another week before we'll see him again, I'll post what I've noted here, then let you all know his response.
The affected rhythms are Kotedjuga and Kuku.
Kuku
Kotedjuga
This COULD be way off base, but just a 'heads up' in case you don't get to the Friday night practices or class next week.