I think this whole "Oil in the Gears" thing is such crap. It says to add 30ml to that area, when I know that half of it leaks out into the PTO crank case and gets sucked up on break-in. Not sure how much of that oil remains there. I actually used a sealed bearing on both ends of my counter balance shaft as I can't imagine much fuel/oil makes it to that bearing to lubricate it. It is a great place for water to collect if you ever get some in your cases. Terrible design imo.