Seriously guys, it wasn't that hard.
1. The statue tells you to balance things - so it was pretty apparent it had something to do with weights on the buttons.
2. Each button had a different size - so it was fair to guess that bigger buttons needed more weight.
3. I started by putting a vase on all buttons (5 lbs). Then I noticed one force fields was down. I remove vases until I found which one caused it.
4. From then all it needed as was some experimenting with different weights. I had one character standing at the force fields so I could quickly see if I had the right weight.
5. I started with the small one piling books until it unlocked. (1 lbs)
6. I dumped the heaving barrel on the big one. (7.5 lbs)
7. And the second smallest button had to be between 1-5 lbs so I just dumped metal scraps in increments of 0.5 lbs until it opened.
It all took 10-20 minutes.
