On the two newer ones, the Rev B and C, you should be OK, I think they strengthened the support for those, only the dark blue one with the old-style display connector was a little weak. I never adjust the one of mine that works, just to be as gentle on it as possible (though I don't know if just the weight of the screen pushing down on it might be wearing it out ) - I think the B and C have better backlights too, I'd quite like to have two of those instead! (though the originals are cool to have in their own way, as they were the first proper non-laptop Apple LCD - I'm not counting that one for the Apple II or whatever it was! )