Come on dude, your cars arer great, and think of it this way, even if people hate your scenecs, there are still people that like them. But if you quit, no one will like you because there will be no more you to like!
well, old machines can get worn out to the point were they just break, but, usually when were talking about rockets,there should b ematmenced equipment
ok, so to control it, you need to go set controls by where u set the motor torque and speed and if it is stuck, one or more of your fixtates may have it glued to the background