I’m the process of restoring the subject motor…it’s probably the first significant maintenance ever done on it.  My family has owned this motor for 60+ years and it hasn’t run in 40+ years.  I am pretty sure the motor does not have very many hours on it.  I just removed the magneto to rework it and found on the bottom side of the armature plate greasy residue in the area of the crankshaft.  There was not a ton of grease, but just enough that I question whether the power head upper crankshaft seal may be leaking.  There was also a little greasy residue on the top side of the armature plate.  I know that my dad had trouble with the carburetor and fuel leaks gave the power head a light coating of oil that I’m in the process of removing.  In the attached photo, I’ve removed the greasy residue for the most part, but observe extreme discoloration around the spark plug wires.  Is any of this normal?  Any concerns?  Thoughts?