Quick update, I took the full test today and they explained that you must wait 90 days between the 1st and 2nd test now, as well as between the 2nd and 3rd, if you are in a situation where you would like to retake it.
6/6/6 53 is what I swung today... Not sure how competitive that is, but there she is.
The math section was a lot easier than what I had taken for practice. All pretty basic stuff, the only real issue is time. I didn't watch my clock close enough and ended up leaving 3-4 unanswered like a dunce... Don't do that!
Reading was a bit more difficult than the practice questions I had studied. I've also taken the LSAT (LOTS of reading) and done well, and those questions were certainly more difficult... These ASTB questions are a bit stupidly written in my humble opinion. Hard to practice for, just read carefully and go back and check everything if you have time. Some of them are remarkably not obvious.
Mechanical was very basic stuff ... There are no equations you need to know, only basic concepts. Study gears, pulleys, and common sense.
Spatial aperception... Here was the doozy. I nailed every practice question for these I could find, to the point I stopped studying them about 2 weeks ago. The test is significantly harder. Really funky angles in some of them, and about half were very tricky where the difference between right and wrong boiled down to something like: Is it a 30 degree upwards left bank out to sea, or more of a 40-45 degree upwards left bank out to sea. F*ck me if I know.
Aviation and Nautical Information... Also fairly basic. Know main parts of an aircraft, know your 4 main forces, know the major parts of a ship, know the main terminology for both, understand the basics of flight, etc etc. Also a few weather questions on there as well.
Aviation supplement was a smattering, and actually repeated 2-3 questions verbatim from other sections on the test. No math in here for me.
I took from 3, btw.
If anyone has questions, feel free to pm me while it's still mostly fresh. Although be fairly warned I started drinking as soon as I left the testing center.