Tackled this job today, and it was surprisingly easier than I expected, taking me all of 1.5 hours to complete.
Here you can see that the inside of my engine is looking pretty clean
The cam lobes are literally mirror smooth.
Here you can see how bad the oil was leaking, the buildup here is on the heatsheild above the exhaust manifold.
Pretty clean cover inside, I have seen some horrible build up inside the vavle covers of some of the American guys cars. Glad mine looked so clean.
And here was the guilty party, a darn crack in the old gasket.