In a hurry here, and like Dottie I love a puzzle! BUT I also love real data, and you should be able to get your ds' full set of scores. If it's school, you can submit a written request for them; if it's a private provider you can submit a written request for his full file (you might have to pay a slight fee for copying). Personally, I think it's always a good idea to make those requests, even if you think you don't need them now - you might want them later on.
Re the dip in processing speed, that can be a result of an LD or other challenge. Like mountainmom2011, I'm curious what the reasons were you sought out testing?
Best wishes,
polarbear