Maybe it's an illusion, but the timing chain appears to have a little slack between the sprockets which might be causing the slight difference. Also, to me, the IN and EX marks look practically parallel to the engine. That's good.
Also, as Daytona_Mike said, be mindful not to rotate the crank using the nut on the end. Use the hex slot cut in the end of the crank, instead. I looked and did not see any warnings in the manual about this, although I could have missed it.