What we all need is a very long overdue Powerscore Reading Comp Bible. Why won't they write one!? With the reading comp sections getting harder and being worth more on the LSAT, the need for one is increasing.
I guess it's because there isn't really a "correct" way of reading...It all varies with people.
I think the only way to increase your score is to just go through all the RC passages as much as one can. I'm still so inconsistent with my RC but i think that's the only way to improve.