Great info. Thanks guys. You're right, I'm finding out that the more I learn about peltier cooling, the less I seem to know. It's taken me more than two months to get to the point I'm at now, but it's been fun and interesting and I plan to keep working on it for as long as it takes to get it right.
Anyway, I have only been using standard silicone based heatsink compound between the peltiers, so I will replace it with some Artic Silver. Also I was a bit scared to put too much pressure on the pelts, but it sounds like the more the better. I am a little shaky on the two 230W PSUs that I am using for the peltiers. They are as old as the hills and I had them just lying around and decided to see how well they would work connecting them in series as per the instructions on this very web site. I tried to follow those instructions to the letter, so I've got the 2ohm 25 W restors and everything hooked up. The only difference was in the wattage of the PSUs themselves, so I will look into getting some newer 250 W or higher units.
It is interesting that no KT266A boards will include on-die support. My Dragon Plus definitely does not have any sort of external thermistor in the CPU cavity (at least not that I could recognize) unlike my Epox 8KHA+ which is definitely obvious. If the Dragon thermistor is external then it is now covered by my conformal coating b/c it definitely is no taller than any of the other components in that same cavity. And they are all pretty flat.
Anyway, thanks again for the suggestions...
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