I have and old 2.0GHZ P4A (400MHZ FSB) and my friend has one too. So we gonna remove the IHS and expiriment. Now I know how to remove it, but it looks really, really bad without it. How do I remove the gunk on it and also would I apply AS5 as if it were an AMD chip (or old P3) because of its exposed core? Lastly, would the mounting be different would less pressure be used (I assume yes) and how could that be done when using the stock HSF?