How do I remove intel's original ball bearing fan for socket 478 pentium 4 (one with the 2 gray levers on top)? My friend installed it so I'm clueless on how to take it out. I flip the the levers (so its not 'secured') then pull but it doesnt come out. I found somewhere that said what to do (http://www.computing.net/hardware/wwwboard/forum/34557.html) But I'm not sure about this so I've come here. Anyone have any ideas if this is correct or if someone can provide a step by step on how to do it?