Yeah, it's a complicated process to figure out a 2E issue. No easy answers there.
Just another thing to put in your hopper... just because a kid was resistant on one test or subtest does not necessarily mean that the kid *could* have done it if they weren't resistant. Very often, kids are most resistant on the tasks they perceive themselves as being weakest in. They're covering up so that they can have an excuse for why they didn't score well. Of course, their self-perceptions aren't always accurate. Again, more complexity.