I just realized, and confirmed something I've never noticed before.
The keyway in the crankshaft is inline with the #1 rod throw.
So a quick check could be to remove the center bolt so the key is visible, line up the mark, and the key should appear to be in line with the center of the left bank cyl head. Or with the #1 spark plug removed, the piston should be at TDC.
Is the keyway pointing up directly to the tdc 0 mark? If not does anybody have measurments so i can see if my balancer spun. :tup: