Gday Rod
Is the oil leaking between the timing cover and the engine front cover plate or at the Timing gear cover oil seal ( at the crank seal direcly behind the harmonic balancer). If the leak is between the timing cover and the front cover plate ,than unfortunatly you will have to remove and re gasket the timing cover
. or check the tension on the timing cover bolts
If however the leak is at the Timing gear cover oil seal than you would do well to refer to FB MAD,s advice re:-fixing the problem.
This might sound a bit crazy but I had the same problem with my FB .What I did was to turn the motor backwards by hand a couple of revolutions and the leak went away?
??.
Yes I know this sound unbelievable but It did happen . May have been a bit of crap in the seal???
Brad