There are two crush washers on either side of banjo bolt...under parts listing, it will show 4 washers needed.
Use something to stop the vanos line from pushing into the cylinder head...you want it pointing straight back. When you do ofhg, which I'm sure you will someday, replace the vanos oil line.
Glad you found it. Did you try just tightening it a bit...again, keeping alignment the same?
Upcoming NYC dates: Jan 8 and 27. See Facebook for other shows and PM me if you can make one...love to see you there!
Mangofy your E46!