The problem I have with using that time to go back and check my work is that the LSAT loves to play with one's confidence. We all know that feeling of thinking we got the answer 100% right, only to go "no way!" when seeing what we chose was wrong. Thats why I suspect my accuracy would go up if I found a way to slow down and choose the best answer from the start.

I don't think the test is getting harder, but I do believe test anxiety is a real thing. Taking practice exams and getting the same score over and over again can make you complement. Then when you take the real thing and encounter something slightly unusual, you get tripped up. On my previous six PT: 69, 70, 76, 77, 78, I scored within one or two points on all of them, so I had an average with very low variability. Yet scored -15 from my average on the September test. What threw me off was the first experimental games section. They were weird, and when the section is first, you don't know if you're gonna have another chance. Therefore, I took the rest of the test with so many jitters thinking I already got enough questions wrong in one section to drop me below my ideal score, and just couldn't think straight for the rest of the test. I got two entire games wrong yet re did them without answers and got them fully right within six minutes each. Anxiety is real, and I am thinking about taking a beta blocker for December to calm my nerves.

I was told my by my pre law advisor that the addendum should really only be used to explain anything that could confuse an admissions rep or leave them asking questions. For example, you may use the addendum to explain why you transferred schools after junior year. Now, if you could find a way to use that explanation as a reason for wanting to attend law school X, go for it. But I wouldn't recommend using the addendum for just a "why law school X" essay because the admissions reps are so busy they'd rather not have to read anything more, especially something that wasn't asked in the application.