PCMCIA Slot Weirdness on my PDQ

[MacFoxG4]

Been using my PDQ quite a bit lately. One thing that's annoying me is the issues I have been having with the PCMCIA slots. I've tried: PMU reset, reinstalling Mac OS, trying different Mac OS versions, and replacing the PC Card cage and every time I think I've fixed the issue, it keeps coming back. After an hour or so of using the PDQ, the PCMCIA slots won't read any cards or won't read them correctly (USB card will be recognized, but won't recognize any USB devices plugged in, for example). Not sure what is causing this issue. Maybe overheating? The laptop does get really warm after being used for an hour or two. Though maybe that's just normal. I've run out of ideas at this point.