I already know what it is. Read what I wrote and think it through.
Fix what he had. Choking an engine is a bad way to make it run.
I know at least 5 guys (not me) who can make the 750's do everything the wrong carbs do and male more power doing it.
No offense to the OP but we don't even know if the timing curve is correct. That right there is why small carbs feel better than big carbs that aren't set up correctly.
And that isn't considering the tune on the carbs.
I'm betting when done the way I know other people do it, that the OP would probably end up with only one emulsion bleed.