Hi,
I think HFSJ doesn't cover each of the things defined in the specs. But don't worry, you won't be asked much on that because HFSJ covers around 95% of that. For the remaining 5% as per me it really doesn't matter. However it up to you to take a call. While I gave the exam, I didn't read specs. I have started once but I felt it a bit boring
. But on the other side you'll have benefits of reading each of the items from the spec and u'll understand that after giving the exam only