I have a oil leak on the mag side of my honda after i have replaced two gaskt. all serface are flat and clean.
the oil looks like its coming from the oil galley between the cover and the drive housing

 

I'm thinkin there should be a sealing washer on one of those bolts. If you see a little triangle cast into the cover next to one of those bolt holes, it requires one. Does it look like it's coming from one of the bolt holes? How about the shift shaft seal? How fast is it coming out?