levers don't work la caza on mac

[hilltowner]

Hi, I've tried numerous times to pull the three levers in waterworks in La Caza amnesia as fast as possible, but it just won't open the door. I've restarted the game three times. I've saved just before you find the lever so that I can put the lever in place and then pull it and run as fast as I can. But no matter, it never works. I've given up on La Caza at this point, but if anybody has any ideas. I don't know if it is because I have a MacBook Pro or not.

Thanks for any ideas.

Marla