Alright, I've had a week to relax, process, the test, and lose sleep replaying questions in my mind that I now wonder if I got right.
I found the AM and PM to be completely different. I answered fewer "first pass" questions in the AM, but felt I got more of the 2nd/3rd/4th pass questions in the AM. I think I got about the same number correct in each, but there were a few in the PM (especially theory questions) that left me scratching my head, but a lot in the PM that I knew the answer to immediately.
My advice to anyone who walked out of the exam feeling like they didn't pass (which is how I felt in October) is to take try to relax and wait for the results with the diagnostic. Look at the diagnostic to confirm the areas where you need the most work (but you probably know this already) and jump back into studying with these points in mind. For me, a HUGE part I was woefully unprepared for was the code questions. The Tom Henry Key Word Index is immensely helpful, if you don't have that already. Also, don't study for the test you took, continue to study all aspects of the test. I found the October and April tests to be very different from each other in the quantity of questions on each topic. Look at the test as an extremely stressful practice exam to prepare you for the next one. Nothing can be done to change the test now, so stressing out won't help (easier said than done, I know).
And, everyone studies differently. I found that failing once showed me my areas of weakness, and I was able to use that to my advantage. I don't have money/time to take a class, so I can't say for sure if that would have been helpful, but I felt better walking out of the test last week than I did back in October. All that being said, I could have failed again and maybe my approach was completely wrong. But, I feel like that approach helped me, and hopefully people stressing can take a deep breath, cross their fingers, and hope the results come back great. If not, come back in October and ace the test.