Oil leak - drivers side?

[hunker7]

Hi all,

I am trying to chase down an intermittent oil leak somewhere from driver's side. I say intermittent as it is accompanied by smell of oil in the cabin and smoke coming from driver's side wheel arch, and it doesn't always happen.

I've replaced valve cover gasket along with blanking plugs & cam seals. I have taken cam covers off again and I'm quite confident they're seated right.

I am very close to giving the car to someone to take engine out to sort all the seals out as smell of oil and smoking wheel arch isn't very A8 like. But would rather avoid it if possible.

4.2 BFM engine

Any tips & suggestions welcomed.