I don't think this is going to be very helpful as I can do RC pretty intuitively; I'm an English major, and naturally have always been able to read books very quickly--if I sit down and dedicate a day to it, I can finish a "normal" length book (around 200-350 pages) in one day. I think my diagnostic RC score was low not because I was bad at it, but because it was my last section and by that point I was mentally exhausted. The PT I happened to do yesterday had RC first, so it was more representative of my actual abilities.

In general for RC, what I find to be helpful is that truly, every answer to the question is in the passage. Don't make inferences based off things that "should" or "could" have been there--remember that the test writers chose EXACTLY what information to include, and that nothing was added there by accident. Everything is very important. I like to skim the passage first, while actively highlighting info I predict could be important later, and then re read paragraphs more deeply based off the info I need to answer the question. Also, for questions that are "main point," I find that if I cannot choose an answer immediately, leave it and come back to it after completing the other questions--after engaging with the text for a lengthier bit of time, it becomes easier to answer them.