I'm following the walkthrough and I'm having trouble on the gears. I know i'm putting them in the right order but everytime I try to put the blue on the middle and the purple on top of it nancy keeps telling me that they overlap and I don't see where because I'm using the picture. Is there something I'm missing.

Hi racingfox,

It could be that a gear on another bar is blocking its access. The gears need to be placed in correct order so that no gear blocks another as you place them on the bars.

racingfox,
I worked quite a while in the gear puzzle and finally got it. I have a save if you want it.
Richard