I have a bad feeling that those zip ties/fan casings are gonna melt, even with that cooling fan right up next to to the heat sink. That sucker gets HOT HOT HOT! I've had to repair my girlfriend's xbox from the RROD and it suggests you "cook" it for a few minutes after re-assembling the motherboard by letting it overheat... It takes a few minutes to get to the "overheating" 2-red ring status and it was too hot to touch long before those 2 red lights started flashing...