We noticed on my friends crossfire that one of his aluminum breather cover screws has broken off. My guess is the previous owner tried to tighten them and broke one off (see picture).

I have never used an extractor/ez out. Any tips on how to use it to get this thing out?

Luckily from when I resealed my own valve covers a forum member sent me a bag of these screws so I have replacements but we need to get the old one out first.