You need to calm down and look at the situation. If you paid for the airplane and there is nothing stating that he has to tune the motor then his obligation to you is over and you need to act right . Why don't you try to enjoy the hobby and learn to tune your own motors. I see your still on here you could be in garage now tuning on it and seeing how things work instead of whining. This hobby will be hard on your MOM"S pocket book and I wouldn't expect anything less. Here is a link to get you on your way

http://jimsrc.com/

[:'(]