Are all A1200 trapdoor devices designed so badly that they overheat? I have an accelerator card in my a1200 trapdoor. I had to melt off the trapdoor "pillars" just to get the door back on with the accelerator in place, and there's still a bulge. Besides which, I had to remove the door completely and prop the entire A1200 upon 4 milk jug caps in order to prevent overheating lockup problems. I guess when they designed those things, they had naked systems as well, and forgot about the non-fanned-ness of the a1200.
And here I was thinking it was only me with that problem. :-)