something is still crap, i have bought a battery pack so i have a high power in the servos and im sure tht it is working , i have manage to tune the engine as lowest as i could :0 but 1 thingi first i start engine , and then it is working and running as a normal one and after about 20 to 30 second it just constantly goes on full power >.< i have no idea what is going on . i am thinking about puting a spring ( bigger one) into throttle because im a bit fed up with it -.- . i hope someone will help me