As a side note, his WISC-IV composite scores are:

VCI: 136
PRI: 133
WMI: 139
PSI: 109

He was also given the Beery Developmental Test of Visual-Motor Integration and got a score of 100, which is completely average. The tester said that his Visual-Motor skills "are average, but in comparison to his superior cognitive skills may be a source of frustration at times in the area of task completion and visual processing speed".

Hope this information can be of use!

Thanks again!