Quote Originally Posted by tom4bren View Post
IMHO, although the mark is obviously off slightly, it's not off by the amount that a 1 tooth adjustment on the belt would correct. If you adjust the belt by 1 tooth, the mark may actually be on the other side of the reference. This makes me think that it's a tensioner issue.
Take a close look at the pic in question...the camera isn't lined up square with the end of the cam, giving the appearance that the reference mark is slightly off.
If the camera moved left slightly, so that the cam sprocket bolt was in line with center, everything would line up just right.