Those are the first three from "10 More Actual, Offical LSAT PrepTests," with me taking them on the dining room table with a stopwatch. I think I wound up taking six tests in all, but I stopped posting here for a while, since obsessing about things usually hurts my performance. After reviewing my first test I figured out a few things about RC and LR (namely: make no assumptions), and that kept me in the 178-180 range until I took that June '99 test last week. I re-tooled my games strategy (less focus on constraint satisfaction and deductions, more on brute force) and did a few more games sections, but no more full tests until the real thing yesterday.
As for the scores, I don't know what to say. There were some "nature vs. nurture" threads a while back; I've always been good at multiple-choice pressure tests. And I've taken more formal logic that you can shake a stick at, which helps.
I'd be interested to hear more about your games strategy. I'm about in the same boat as you are -- consistently hitting 176 - 180 on practice tests, with games always being the determining factor. I also discovered I was wasting too much time and energy making deductions up front, especially when a lot of the questions could be answered pretty simply just by eliminating the wrong choices. Do you do any up front work, or just go straight to the questions, making the deductions as needed?