Mine has the same oil leak from the drain hole, but with the front up on axle stands with the engine running and in gear (4wd disconnected) there is no noticeble oil leak.
It is only when I turn it off that it leaks quite badly. I thought it may be gearbox oil and leaking out when it depressurises, but I'm 80% convinced it's engine oil.
I also have the telltale smoke from the dipstick, and have cleaned all tubles and the PCV system but can't clear it. I think I have too much pressure in the crankcase.
Very interested on how you get on with this as I may need to do likewise.
Good Luck
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