Hi MePlus!
Thanks for the login info!
I made a cursory scan of some of your tests (today my schedule is tight, but I'll look more closely tomorrow and likely send you some further thoughts directly), and I noticed a few trends that immediately jumped out at me, which I felt would be good to share with you, and others since many people find themselves in the same boat. Here they are:
1. Your performance in the first 10 questions varies significantly.
Your most recent test was strong here, but prior to that you tended to have a significant variance in the first 10. Typically, the overall difficulty of the first 10 questions is the easiest in the section, and so you
have top crush the first 10. This may require slowing down a bit, but that is acceptable if it results in you killing the opening set of questions
2. Must Be True questions give you a lot of trouble.
While any single question type causing issues is a concern, when that question type is Must (or Method/Flaw, which is next on this list), it's more a problem. Why? Because Must questions require you to understand the facts of the argument. If you miss a lot of Must questions, it means that you aren't picking up the details of the stimulus. That then means that your ability to Strengthen and Weaken arguments is compromised, and affects your performance in those categories as well. Must questions are the foundation of a good performance in LR, so you have to work on locking down the details of what you are reading a bit better.
3. Method/Flaw questions also need work.
In the same way that Must Be True questions reveal your grasp of details, Method/Flaw questions reveal how well you grasp the structure of the argument. If your gasp of structure is not as strong as it could be, you will have all sorts of problems strengthening, weakening, paralleling arguments, etc. You should definitely focus on trying to better understand the premise/conclusion structures you are seeing, but also on knowing the flawed forms of reasoning that appear on the LSAT (Quick--what is an error of division?).
That's a few quick thoughts, and please let me know if that helps. Thanks!