If you are getting a bit of oil out the front, that could be a good thing.
How else can the bearing be lubed ? Keep in mine, the four stroke
doesn't have the pressurized crankcase like the two stroke. It has
to live on the small amount of oil in the blow-by from the rings. That
small amount of oil has to lube the main bearings, the cam and followers
and the rocker arms and shafts.

Oil is good.

FBD.