I have just purchased a new cen ct4s. This is my first nitro car and as such I would appreciate the answer to a few questions. 1. It says to fill the shocks with oil that is provided. Mine came with no oil. Did anyone elses not come with oil and does that mean it was already done at the factory. 2. I know I need to put in after run oil. Where does this go and do I need to remove the air filter to do this. 3. Anyone else who purchased this car are all the little bags of parts used or are some of them extra or replacement parts. 4. How do I get the glow plug out to replace it if needed. The wrench provided does not fit over the glow plug. 5. If I wanted to paint the body what is the best method. Thank you in advance to anyone who helps with the answers.