This tutorial is brilliant and saved my PS3. Thank you.
One comment or question really: Between steps 9 and 10 a heat shield magically appears. In Step 9 when you see the drive being taken off, there's no apparent heat shield.
But in Step 10 we see the heat shield. On my unit, there doesn't appear to be one. So this was - and is - a little confusing. I thought somehow I'd lost the part. (Though in the space I was working, there's just nowhere it could have gone.) Is this a problem to not have this? It's hard to tell from your pics whether the original had a shield or not or if these were two different units.