I think we might be confusing the question. He says he is getting "great arrow flight".
BMFER-
When you say point of impact. Are you refering to where your bareshafts are hitting in reference to you feathered shafts? Or are you talking about your shots are hitting right of where your looking?
If your talking about hitting Right of where you are looking, then yes, moving the center shot will help some. But this will also affect your spine. If you don't want to mess with cutting or getting differnt arrows, just keep shooting. Your mind will learn to adjust to the bow.
I've shot both, the GM and now have the Dorado. I prefer to shoot them with a rest. This allows me to switch from my other bows that are just cut to center back to the Hoyt with out having to relearn the left to right. I also live in Oregon where it rains a lot. So I shoot vanes in the late season.
HTH