Have you looked into non-verbal learning disability? That's the only other thing I can think of. DS's scores were similar in that everything was around 110-115 EXCEPT for perceptual reasoning which was in the 140's. On achievement testing, he is advanced in everything, but esp. math, which is over the 99.9th percentile. So he is the opposite in that verbal is much lower than PR.

No explanation for our WISC gap either, and the neuropsych didn't seem too concerned.