Being that this is my favorite game of all time, let me try to help you here!
To determine how to get to the "next" pagoda that needed its timing set to 10, 12, 2, 4, and 6...
First....I used the walkthrough to tell me WHICH pagodas were next. The walkthrough I used has a little map that numbers the pagodas for you.
Next....after setting the timing on one, I would return to the large CENTRAL pagoda, because it's easier to look around from there and see where you need to go next.
Here's the link to the EXCELLENT walkthrough that I used when I got stuck. I know there is a Gameboomers walkthrough, but with all due respect...this one is much better and more clear to follow.
http://www.the-spoiler.com/Sinjin/MYST3/exilewalk.htm It's called Sinjin's Guide to the Ages. You just click on the book at the top of the screen that represents the age you need help in, in this case the Amateria book.
Good luck, and let me know if you get stuck again. Whatever you do....don't quit. This game gives you EXCELLENT rewards for solving puzzles! You will LOVE the end of Amateria and wow...Edanna, and, and, and, I could go on and on!
Lori
"girlgeek"