Okay, folks! My zip file is updated with the latest versions of my levels. I added one more : a training level for the angled acceleration technique. It has lots of rails, but you still have plenty of opportunity to fall out. I went ahead and polished it off. Let me know if you see any T-intersections, mis-aligned textures, etc. Thanks!
I also updated the switch on my hard angled accel. level.
And I updated the textures/geometry of the seesaw level. Now, you can see the goal and switches from below, through the glass! (And hopefully no more Z-fighting.)
I still need to polish off a couple of more levels (the inside corners training level, and the angled accel. hard level)
You will need to have my texture pack installed, plus Mehdi2-beta textures. I removed my texture pack from inside the zip file, since it added quite a lot to the download size, and there's no need for everyone to download that every time...
You know I love comments, suggestions, etc. So please make them here!
(EDIT : provided links to the important files)