I'm just back from the garage.
I took the compressor wheel off. Voila...4 screws more screws...one of them was worn out (???) I did the old hammer and screwdriver trick to get it off.
I could not tell much...as expected?
I assume the oil has to come out from the center bearing. It has two rings/seals to prevent the oil from coming through.
Maybe that hfs is a good idea?
Somebody has been here before.
To me...it looks good.
The center bearing with the two rings on it...looks good to me also. But then again, what do I know?
G