never thought a bent shaft could affect it that much, i'll change it. i wanted to ask if 3 in 1 oil is ok, i do have wd40 but dunno which is better. also, i have a question about changing the main motor, i still dont get why i shoudl change to 9T though. one thing is that it'll burn out my main faster with a 10T, but i'm never going back to the ni-hm batt so i'll have no use for the 10T anyway. so i just thought that a 10T would gimme faster head speed and if i burn it out, i can just put the 9T on. please explain.