As Rich mentioned, you probably do not have one weak area, as you seem to be pretty strong in verbal.
For SC, I would just keep reading the
MGMAT SC guide. Personally, I just read this guide until the SC questions and errors felt as if they were second nature. What I mean by this is that for certain quant questions, you probably have a pretty clear of exactly what you want to do to get the answer. Try to force yourself to have this mentality for SC. As you read a sentence, you should be able to identify potential errors right off the bat. If you can do this, you will be much stronger at SC. I also made a SC guide for myself (attached in debrief, link at bottom). I felt that this helped a ton. I always found it more helpful to make guides, rather than just reading text that was prepared by someone else. If you force yourself to make a guide, you are actively learning the material.
For CR, definitely focus on predicting the answers and finding logic gaps. The more you can "predict" the answer before actually reading the choices, the better you will get at CR.
For RC, you are going to use a lot of the same skills as for CR. I would make sure to take notes on each paragraph and personally I feel that the most important things are to understand the main idea of the passage, understand the purpose of each paragraph, and then be able to spot the details. If you can do this within a 2 minute - 2 and a half minute read through, you should be able to identify the correct answers much easier.
Remember for verbal, there are 4 fatally flawed answers for each question. Verbal can be much more formulaic that one anticipates, especially for SC.
While it is hard to score consistently above the V40 level (just due to the small change in percentile for each point increase), if you can identify the 4 flawed answers, you can do this consistently. I would recommend going back through your entire exam and trying to understand why each answer is correct. For every question, you should have three tasks: understand why the correct answer is incorrect, understand why the incorrect answers are incorrect, and understand why the incorrect answers are tricky. The GMAT will try to trick you with answers that are half correct and half incorrect, but if this is the case, you know that it is 100% wrong.
Even though you already went through the
OG and Verbal review, I would go through it again just so you can explain each question and answer in detail.
How much longer do you have until your exam?