You necroed a thread to advertise?
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Something that was not mentioned in the thread was how important it is to get all screws to apply an even pressure and not too little nor too much. Using a torque spanner or ditto screwdriver is best but most people do not have such tools at home. Sometimes you might want to insert super thin washers (maybe just 1/3mm) to get more torque.
If an electrically conductive paste is used, one should protect the area around the processor with something like cling film for the duration of the installation.
The video linked to in post #28 is awful doing several mistakes (way too much paste, paste applied in such a manner that an air pocket is likely to form, and more).