Yes. Maybe just the tiny cam?
Sort of both: when you ease onto it there is a flat spot then it picks up. When you stab it from idle to about 1/3 or 1/2 throttle it starts to die then about a second later surges pretty hard. Steady cruising at 1/4 throttle and 55mph it does fine. Its only when I actively open the throttle, almost like the carb is catching up with my input