what is going on with the exhaust?i cant adjust the needle.i cant get it to run?when i can get it to start it dies as soon as i give it gas.does annyone have the stock specs for this engine?i feel like i just got ripped off.glow plug is good,broke in just fine,but now it wont run for the life of me.messed with it for 4 hours.imreally put out right now.can annyone help me?