This is not in reference to the rough idle tsb concerning the avcs inlet banjo bolt, but instead where this oil feed line connects at the heads.
This is a long post from the lgt forum, it starts as just another oil thread until post #123, where a Subaru tech posts his findings. Things get VERY interesting from there. Read this and tell me we shouldn't be worried.
http://legacygt.com/forums/showthread.php?t=58023