Hi Guys,

I have a question about the "rocker arm shaft retaining screw" that i found loose under the valve cover.
I have been told that this screw/bolt shall fit into a little hole in the shaft to keep it in place.

I also understand that this is vital for the oil to reach the arms themselfes.
However: my rocker shaft seemes to have rotaded out of place.

Question:
Is there any way to rotate the shaft back into place without removing the complete assembly?
and also: this screw/bolt needs to be tighten down (hence the copper washer, right?)

Picture of the bolt and the hole just in front of it: