Finally checked mine, and yep, all ten were loose. At least three weren't even finger-tight.
Tip: You have to have either a 10mm crow foot or 1/4" socket/u-joint/extension for this to get under the fuel rail. A 3/8" drive isn't getting under there.
I could not find my 1/4" u-joint, so I'm getting another. The crow foot wrench worked, but a 1/4" drive would have been SO much easier and quicker.
I can't believe they cover up such a pretty engine with plastic. I'm sorely tempted to leave it off.