one of the 2 screws from the bottom pinged across the room when I did this and I'm pretty sure I don't have any hope of finding it perhaps until I move house. Any ideas on where I can find another? UK based. replacebase doesn't have them. It works fine without, just would like it screwed together properly...

this is great - success - thank you. A little confusing between step 4 and 5 as I think you reverse angles on the photos - in step 4 the motherboard is right under where you have the opening tool and in step 5 you have the spudger on the other side.