Nice tip removing the battery compartment cover.
I was able to get a large handheld mirror to view the back of the motor to be sure the gaskets are seated. I'll feel for oil once it's cool. I still smell oil but hope it's just oil burning off.
Note: I found the instructions apply just as well to the M42 with the exception of
Oil Supply Seal: 11121247948. I couldn't find it in my M42 motor until I realized it's note there.
I'm going to edit the first post.