Couple of things..
If it sputters and cuts out at higher RPMs then check the vent tube in the right ear. It could be bottoming out and not getting the right air flow.
Another option is the gas tank venting and this one usually allows a restart after the bike has sat and allowed the pressure to equalize. Two vent areas to check: the gas cap vent and the vent tube from the back of the tank
Patriot Guard Rider
2000 VN750 Sere (Serendipity)
1990 GL1500 (Ole Blue)
1986 VN750 EVie (project bike, heavy custom)
VROC # 11628 / 25000-H
ARVROC # 12 Coordinator and Crowd Control
OKVROC # 18 (H)
TNVROC # 45 (H)