There's only four bolts to the converter, with the offset hole. Your marked holes don't line up...probably marked a common hole, instead of the timed one. Stock flex plates and converters are marked for that hole.
Might try this...turn the motor by hand, until there's 'two' holes clear, one on each side of the opening. Then turn the converter, until both those holes line up, bolts in just hand tight. Then, you can turn the motor, to check if the other two line up. The 'timed' hole in the flex plate should be marked with an 0.