calm down. these engines are really sensitive to weather. Whenever the temperature changes it's good to change the plug and tune it different so it will run better.
Today i came in to the hobby shop and the guy said break in the motor then change the plug to medium. the current plug is hot, it's only good for breaking in the motor, after you're done you need to go to medium.
The reason your starter box broke is these motors have really high compression, and it takes lots of power to start them, if you are having a hard time starting it then use a hair drier on the motor and it will make it more loose inside and it will start up.
It's always good to wait and not rush things.