And back to adding pics.
The rocker cover all stripped down and black sludge removed:
The mesh filter cleaned of sludge refitted with the cleaned up baffle plate waiting to be refitted:
Baffle plate bolted back in with loctite'd screws and new seal RTV'd in place:
And then the modified bonded (RTV again) and screwed in place breather vent:
The screws are are M4x0.75 and clocked the way they are as those were the only positions where there was enough meat on the casting where I could drill and tap it
Rocker cover is now back on the engine, seal seamed to go in ok, and torqued down