There isn't any question that seat position is critical, or can be critical to fit. However, on my 58 cm frame the distance from centre of BB to where the seat post clamps the saddle wires is 27.25 inches. On the horizontal, the difference between 73 and 74 degrees is .46". So as has been said, it isn't any difference as long as your seat post and saddle allow you to get where you need to go. In most cases people are running out of space to move the seat back and 74 would make that worse. There should be a seat post that would allow it though. I would go back to the bike that you originally fit and just recreate the position.