I am surprised to see how much corrective work has been done on the production line.
This black blob looks like a bit of Devcon that has been shoved in to cover up a blow hole in the casting.
Once you get started on a tidy up it can get very addictive, especially if you are the one going to ride the bike.
Here I'm getting rid of the nasty step where the main bearing feed holes have been drilled.
Very therapeutic!