Hi,
From past experience of these types of test I think you may just need to wait it out. Typically, tests of this type are normalised to others who have taken the test (i.e not expressed simply as a percentage of what you really scored, but how you performed relative to everyone else who sat the test).
I believed that the spatial reasoning test was a typical test for NATS, so how come it was a surprise that it featured in your assessment?(am I missing something, isn't the spatial reasoning paper not always used at stage 1?).
Anyway, good luck. These things are not always as bad as you initially fear.