I bought it off facebook, It ran perfect. Always started right up. But after only a month of having the stupid thing quit. I was driving and it lost all power all at once so much that I lost balance a little, then it slowly died. I got it too start but was scared to take it far because of that big pop and loss of power. It felt like I threw the brakes on because I was almost full throttle in this bored out 1977 Vespa going at least 35 and lost all everything. Please help me