stuck in museum

cant unlock sarcophagus - nor get detail from floor. Haqve got 13 pieces...

I finally got through the other'sites, but am stuck in museum...I have 8 gears, and "1/2 scheme"..have unlocked standing Sarcophagus cabinet,, the 2 stands, the curator is sending me 'over the edge'-(a lot of places I click on, she has some comment or other that makes no sense to me) Is anyone out therewho can offer some advice on getting this done?