well at least after a rebuild its easy to see where its leaking .......
I have oil dripping on to the passenger exchanger towards the outside of the car. ( on my newly blasted and painted exchangers

)
got under with my flashlight and took a look . I can see it leaking down from either between the seal or on the edge of the seal where the heads meet the cam housing . I can see and feel the shiny oil as it runs and drips off the orange sealant where it squeezed out.
I guess it could be an upper rocker shaft but I seriously doubt it as the area is supposed to be sealed from that anyway . The housing is supposed to sealed to the heads right across but I will check that out.
I am wondering if I disrupted the seal torqueing the assembly down on to the head studs ( I preassembled the housing to the heads and popped the whole thing on. )
so now it looks like the engine is coming back out.
But I was thinking of just doing it on my engine dolly.
1. drop the engine and remove tin.
2. remove timing cover and undo tensioner and sprocket.
3. unhook chain from cam
4. remove cam housing/ timing box cover plate
5. remove screws fastening shroud to housing
6. back off all rocker arm adjustment screws.
7. unbolt housing and remove with cam still inside .
8.repair seaing surface.
Does this seem like a reasonable approach or am I missing something obvious. ?
Thank s