Thats some good info, Jordan!
Especially the pic of the flywheel:
I zoomed in and took some measurements. Looks to me like the bolt/dowel cluster spacing is
not symmetric, which is what I would expect to ensure flywheel can only be mounted to crank one way.
The info also confirmed I used the right peep hole for the timing. So I suspect a mistake was made during flywheel manufacture. Anyway, it is what it is and engine runs fine.
Malcolm