That could depend on your mods. You said you have 1.5" pipes. Straight pipes with no mufflers? They can be difficult to tune for. You also said pods. What kind? If they're the K&N pleated type, they can cause running issues, premature break-up requiring smaller than ideal jet sizes. The 30 pilots you put in now could also be contributing to the break-up, maybe they're too big.
The '76-'77 carb set had the largest needle jets (Z-8) put in any 650 carb set. These limit the jet sizes you can use, especially the mains. You can't go as big as on some of the other 650 carb sets or you make the already rich midrange too rich. The 3 circuits in your carb overlap the one next to them slightly. Larger mains or pilots also effect the upper and lower parts of the midrange .....