Ok, so I mistakenly bought a waterblock for a socket A and now I am going A64 (do'h!) some people say that the athlon block version can be used on an a64. I researched into this and swiftech say that although it would cover the core, it would not cover the metal cover on the A64 cpu's which is why they made a flat version. So my question is, is it going to hinder the cooling capability of this block if a tiny amount of one side of the metal shroud is not touching the cooling suface? and when i say tiny, I mean a few mm not much.