Yeah is it possible to tweak the heat sink?
More thermal compound will make it worse not better, thermal compound in excess acts more like an insulator than a conductor of the heat.
My old laptop had heat pipes that went from the CPU heat sink to the rear cooling fan and a slight careful bending tweak got better contact, I stress doing this very carefully if its possible at all.
Well, thats the type of heatsink it is, a pipe system. This IS the replacement heatsink btw, the third one actually. None of them sit right, its just a terrible design. The factory application had a magnificent blob of paste on there. With bending and all the like, I have gotten it to this point where a thin layer gets you half contact. Otherwise, a thin layer would get you zero contact. Anyway, its not possible to get a thin layer 100% contact imo. Im not talking about a blob either, just think paper towel rather than the recommended tissue-translucent. I mean, it cant be nearly as bad as the factory blob of generic.