Hi Richdave, thanks for making some great improvements!
I just reviewed the guides, and you definitely cleared up all of their flagged issues. I made a couple changes, notably making them all Installation guides. I know for some of the guides that may not seem particularly logical, but we'll likely soon be programmatically changing Installation guides to Replacement (based on our [http://meta.ifixit.com/Answers/View/4662/Guide+categories+don%27t+seem+to+fit+what+is+being+described#answer4670|earlier discussion]), and I think replacement makes sense for all of them.