Hi,
why did you need to change your carb? I am not sure what you mean by adaptable and I was unaware you could buy after markt carbs. Clearly if it was running ok before then the new carb has caused this problem. I cant remember if these are two stroke, I think they are.
If the mixture was wrong when you started it then it could of caused all sorts of problems internally. I would start off by locating a proper carb (ebay) and then put that back on or prehaps your old one first. Lets us know a bit more and may be able to help further. Good luck
BB
August 2009