Hello, I am having issues getting my spirit to run longer then 5min the battery is brand new and is a 7.2v 2000amh ni-cd battery. the only thing the i have changed was the motor which is a Trinity Monster Stock Pro and never changed the gearing or anything. I was wondering what all i could do to get longer run times. I was thinking about witching to a 5000mah battery but i do not know if that would help to much. and is there a better motor i could buy to help?