Any special steps to removing a Thermalright NB-1C from an Nforce2 board?

I am trying to remove a Thermalright NB-1C from an Nforce2 board, but squeezing together the little feet on the bottom and trying to push them through isn't working like it would on a normal northbridge heatsink. Are there any special steps I am supposed to be doing first, or am I just not grabbing the feet well enough with my fingers? Thanks in advance for any replies!

Go here and then click on Installation and choose "NB-1C (nForce2 )" Follow the instructions in reverse.

Hope this helps

[edit]

Or just do what he said
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Sometimes you need a pair of needle nose pliers to compress the tabs. Push down on the nylon pins and compress the tabs with needle nose pliers.

*Mr Obvious* Off of that last comment...make sure they are de-magnetized, as with all tools being used w/ a computer.