iBook G3 Screen Hinge

Hello everyone! I'm glad to be back here - it gives me the same cozy feeling that I get when I'm in a big library!

The hinge for my iBook G3 is a tad loose - when I close the lid, at about two-thirds of the way down it will drop down on it's own.

Hopefully it doesn't get to the point where it can't stand up on its own, but I'd like to know if this has happened to anyone before?

Is there any way to tighten it? Or would I have to replace the whole casing?