Very curious to know the composition of the gear. Keith Craft backed off from shipping motors with the poly-carbon type gears because they are prone to this sort of damage, and reverted to bronze. The poly carbon ones were supposed to be easy on the cam like bronze, but not wear as rapidly; however out in the real world they are shearing teeth. I mailed him my distributor, as well as an old MSD unit from my prior motor, and he put bronze gears on them. Thousands of miles later I'm still good, and I haven't had to break out the spare yet.* Note that the "stock" gear on an MSD unit is hardened iron. Although it's supposed to be softer than steel, manufacturers of billet steel cams say they damage the gears on the cam and recommend that you replace them.
I agree that it's
oil pan pulling time.