I just bought my blaster on Tues.. I got it for 500 and knew that it would need work. While inspecting the blaster I have noticed an oily substance in and around the exhaust. The whole inside of the exhaust is coated in it. Also in the gas tank the sides of the tank seem to have the same junk on it. What would cause this. Also the blaster starts on the first try but has white smoke coming out most of the time. Thanks