Some answers for Chichen Itza Needed

I'm in Chichen Itza and have been for over a week. Lots to do here. I have found atleast 15 skulls and ready to solve the puzzle to get the golden artifact and I have the mask. The problem I have is that I have every skull with the correct symbol on it with the exception of Easter Island. For some reason I've only found one Easter island skull and it does not have the correct symbol needed to get the artifact that will solve the puzzle.

Does anyone know where I can find more Easter Island skulls?

Thanks
Boosie1

gameboomers walkthrogh includes a map that shows where the skulls are.

Hi, the EI skulls, to the best of my recollect, are, 1. in the first room, filled with water, on the right of the long rock in the water, 2. in the skull room, by the door, on the shelf, and 3. between the tall chamber (with the rising platform) and next room near the skull puzzle key stone (i think it is a green stone, with the key to the skull puzzle). good luck
c~tea

Help! I arrived at the disk where you put the jade skulls in, and found that I only had 13. Luckily, in my 13, I had 5 of the 6 correct ones. Now, I have to go back to find those I missed. But how do I get back down? Once the platform got me up to this level, I can't see how to get it to descend -- or to find an alternative way out of this level to repel back through the original cenote. Does anyone have any ideas?