What are the cutoff requirements? Do they just take the VCI and PRI into account? Did WMI and PSI bring the FSIQ down? If so, and there is >23 point difference between the indices, then GAI should be calculated.

Why do you sense a discrepancy?

Gabalyn's right. You'd have to pick another test. I've read the Stanford Binet is a good test to use for nonverbal strengths.