Each administrated LSAT is different and yes there is an experimental section. All the preptests sold will only have the 4 graded sections because the experimental section is not disclosed.
If I could come back to CA, I would love to, but if not, staying in Illinois is fine, too. I didn't finish all the last 36 preptests, so I still have some pristine tests to study on. Wish me luck! and thank you for all your comments!