I had to replace my motherboard recently so had to remove the Socket 775 backplate of my Thermalright Ultra 120 Extreme which uses a sticky pad around the centre point to hold it in place. Typically this pad did not come off cleanly so none of it is reuasable. Does anyone have any recomendations on what I can use instead of this pad (I assume it isn't a good idea for the metal of the bracket to touch the motherboard)?