How about the HOTAS section? From my understanding that's the greatest influence on PFAR score. If you're planning on retaking (personally I think with the 5 on the PFAR if you're applying SNA you should) you should focus on that, as well as the UAV section. If you don't have a joystick and throttle, I would suggest getting one and practicing with the Jantzen sim and the UAV flashcards. I strongly suggest using the compass trick on the UAV section, I missed a few on my first test and was able to get all of them correct in under 2 seconds using that trick.I think my math section is carrying the rest of my scores lol, I don't think I got any wrong on that one.
Jantzen sim: https://jantzenx.github.io/ASTB/
UAV flashcards: https://www.proprofsflashcards.com/story.php?title=_36014
Compass trick: