The only thing I would really worry about on the iMac G4 is the neck getting loose and the display starts to sag. I've never had this problem, but I've heard it's hard to fix once they start having that issue. The only other thing is if they are not stored/ shipped properly, the display can also become crooked. I've read that it is somewhat easy to fix this problem. Mine has a slight tilt in it and I'm going to try to fix it when I get around to it.

Also, good to note that whenever you work on the iMac G4 you have to replace the thermal paste on the bottom. :beige: