i heard somethings went wrong with the 07 dragon. some people complained about the lack of power, the injectors foul the plugs right away. does anyone know what the deal is with this sled? like whats so bad about it? and the CLEAN FIRE INJECTION (CFI), is it the same as the injection as the ski-doo SEMI-DIRECT INJECTION (SDI)? i just recently got a dragon... but i got it cheap because the engine was blown out the bottom of the crank case. im just getting more info on how it works. so basically this is my first high performance snow machine.