If you have fuel all over the car you have a leak some where, until you find where it is leaking it will never run right... small leaks cause the world of problems

What you are describing is growing pains, same as I had back when I started wth a Tmaxx.. these things are beginner or intro into nitro cars. you learn on these then progress to higher end stuff. But nitro and the all idiosyncrasies that come with it is not for everyone... Takes allot of time and patience