I started my LSAT prep in November by briefly going over the LGB and LRB a few days a week. I took my first timed test December 1st and got a 149. I just took my 5th full test today and got a 150. I have been through the LGB bible twice and the LRB twice all to no avail it seems. I have implemented many of the tips on studying I have seen here and while I seem to do okay sometimes with timed individual sections while studying, when it comes to full tests I crap out it seems. I don't get nervous, I don't get tired, I can still concentrate,I just can't make it happen. I do work 10 hrs a day and sometimes my studying isn't exactly top notch, but I do at least two games or one LR section a day and I always review my wrong answers on LR to better understand my mistakes. I am doing it all right according to what I have read and can ascertain, but it isn't clicking.
I have trouble making the inferences on games and have tried only doing 3 games to no avail. The extra time doesn't always help. The other day I got 17/24 on a timed games section, this morning I got 8/22. I understand how to set up games, and the rules, but some games I look at and just go blank and I have trouble really getting anywhere with it. I have the Powerscore Games set-up guide, but some of the inferneces they describe in the setup I don't even come close to realizing while I did the game. AFTER reading their inferences it all makes sense, but that is too late.

On LR I never get less than 12 right, but I also never get more than 18 right. Most of the time I can narrow down the two contenders, but not always. No one question type gets me, I am all over the place as far as what question type I usually get wrong.
On RC I never get less than 19 correct. This is by far my best section and I have yet to even read Nova's tips for doing better on this section. I decided to concentrate on my weaker sections.
I have a feeling that I need someone to help explain the LSAT to me as I am not always making the connections. I am going to go ahead and take February, but I know that I will be retaking in June/September. I need at least a 160 to get into my preferred school and the T3/4 that is available to me gives fairly generous schloraships to those with scores in the mid 150's. But I am applying too late in the cycle for those scholarships...
so I am thinking about a prep course. I have Testmasters, Princeton Review and Kaplan available to me. From my readings here I am going to opt for TM or PR over Kaplan.
My concern: Since I have been using the Powerscore books and study methods would TM or PR be a better choice? I think doing the full length in-class teaching will help me to understand exactly what I am doing wrong and maybe help make the connections that I am missing through self-study and allow me to boost my score in June/september. What do you think?
Sorry for the confessional, but my SO, friends, and co-workers don't seem to understand the stress that I am going through, and how challenging the LSAT can be, not that you care, but I needed to vent and ask for some honest advice. I will go to law school, but I would much rather go to my preferred school than take the T3/4 route.