I'm also in the same boat. I'm writing this weekend, and yesterday I scored 161. -7 in LR and -9 in RC and -2 in LG. I'm trying to focus on LR and RC now. I've read loophole and trainer but nothing has seemed to dramatically improve my LR
I second all of the above - Loophole is a great resource. Additionally, you really need to work in breaks into your study schedule so your brain has time to integrate the concepts you have learned.
Yeah I read the loophole and this is helpful but sadly not a consistent strategy. Sometimes there is no language in a question that is necessarily powerful/provable - especially on the tougher questions.