I bought a used rampage xt. It will start 4th pull everytime. Idles and will run for a couple of min and dies from a lack of fuel. Plug is dry when I check it. I have reset the carb to factory settings and nothing seems to help. From what I have been reading the simplest thing to do is get a new carb. This is where my confusion comes in at, which carb do I get? The pull rope cover says it is a zenoah G270RC. I don't know what CC it is or what carb I should replace my old one with? Thanks for any help.