Could it be that the turbo drain bolts are Torx and not Hex? Mine were Torx.

As to the oil cooler lines, you were lucky but learned a painful lesson: verify every thing is on tight before driving off. We all have DIY mistakes, which is why we learn not to do them again!
Yep, the PCV system is a pain in the butt. It still feels good knowing that you did a better job than a disinterested mechanic would do. Beside, a nice beer after the job feels that much better than getting the bill for services rendered + shop supplies :)

Klaus
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Volvoless. Sold the R. There is now a void...