i recently messed up my socket 478 northwood and so im replacing it but whilst doing it i notice that the bracket is not the standard one it has two folding arms (like the socket does to lock the cpu in place) so there isnt a replacement HSF around. i could use the one ive got but the problem is the messed up cpu is stuck and the is a black hard substance around it, which i gues is the thermal paste but its rock hard. is there a way of disolving it and do i need to pred the heatsink in any way before i reuse it?