Thanks for the responses. Prior to my second and third attempts, I relied more on third party material, as opposed to official guide material. As we all know, third party material, specifcally verbal material, is not the best, because it can be hard to mimic the way the language is used in the actual GMAT. Therefore, I am very hesitant to look at material that is not official, at least in terms of actual problems / questions. I turned to doing the LSAT CR and RC because, it too is "official."
While I the LSAT has helped me improve in both RC and CR, sometimes I find myself overthinking and trying to outsmart myself, so I want to get back to recognizing the various patterns and language of the GMAT RC and CR.
Anyway, I have not heard of the GMAT Paper Tests. Looking at various posters' comments, they sound pretty good. I will give them a try.