Keep in mind these are raw scores, not scaled scores, so we don't have normative information on his performance at the moment. Also, at 6 yo, bonus points for speed are relatively unimportant, especially with a raw score of 14, which means he probably didn't reach the items with bonus points on them.
But I would say you bring up some good things to watch out for, Portia, especially the observation about the vestibular system. He also seems to do better with gross motor activities than fine motor activities, especially if they don't involve eye-hand coordination (manipulating objects). Hence preferring hand drumming to stick drumming.
