right now i am running 8s with 3200mah each on that axi 4130-16 on a sundowner 50 and with the battery fully charged i can not pull full throttle until the battery is lower in voltage, the motor make this grinding horrible noise, i am running a 14x13 grauper carbon fiber prop. all timing and setting are as low as possible on my hv110 esc. the plane is fast but i think that prop is to big for the motor. i am thinking of running a smaller prop and more volts to make it the rpms compensate for the less pitch i will be using. what do you guys suggest?