So I know that the 3g has a real problem with overheating and whatnot. And if you replace the casing for the phone (like say replace the black casing with an orange casing), there is no heat disperser - inside on the plastic there is a little foil-like-thing that is the shape of the battery sort-of, but that doesn't exist on the new case that I have. So pretty much, the new case is going to be much more susceptible to the discoloration that happens when the iphone overheats as it usually does. WHAT IF....I put a few drops of thermal compound on it (the stuff you use for a computer processor). Would that work to reduce the heat that is directly applied to the plastic from the battery? Or is that just a waste of thermal compound?