Reliability Query

Hi, I have a concern about the reliability of some of your subjects, given that they are of such short duration. I completed the free IQ test and then a few months later the full IQ test and while my FSIQ was similar to other evaluations I found that my verbal IQ score was on the low side, due to my vocabulary Score only being in the 80th percentile. However on the free test it was in the top 1 percentile. Just a bit concerned that your subtests possibly don't have great reliability given how short they are, ie only a few minutes each.