Just want to say I've done exactly the same things and have seen similar improvements! -18 to -9/-8. Really enjoyed how the LSAT Trainers bigger picture (The forest as he says) compliments JY's method (the trees). Definitely great advice :)
... games using the 7 sage foolproofmethod. I really really recommend it ... the questions, but using the foolproofmethod, games soon became my favorite ...
+ 1 on JY's method. He really makes a piece come alive.
I've also found that, when I score well on RC, I actually don't refer back to the passage much - if ever. I think that's product of concentration and good active listening.