Yes if you turn it looking down on it through 180 degrees, then rotate shaft looking from end through 180 it all lines up again but puts the unworn side as the load bearing side.
Obviously you have to dismantle the whole rocker gear but easy enough to do.
Make sure you keep on top of oil changes as these are not unknown to snap the rocker shafts, normally between 3/4 knocking cylinder 4 out, but it's always due to bad looking after.
tabetha