Hi i ride a yamaha cygnus 125, use premium fuel and always warm my bike up for around 5 min, it has only 500k's on it so far but even after warming the engine the first 1/4 turn on the throttle and for about 2 seconds theres nothing, then all of a sudden it throtels up the way it should. its the same hesitating that it feels like when your about to run out of fuel (thats not it thoe). then after about 15kmtr later it goes away and only comes back if i dont ride for a while. i ride it daily. what do you think this is? hasnt had its first service yet, i thought it could be a auto choke adjustment. also the cygnus 125 has a carbi heater which i thought would stop this sort of thing. what do you think?