I recieved the wrong carb on my new engine, and whenI wen't back to get the right one I was told that I had to use my old one, andthat they dont stock the pull type any more?But the old one was damaged Breaking in my new engine was a total disaster. Is it possible to use a twist carb on a Caldera? I was told I could find another SH.18 pull carb online? Am I missing something here redcat? Not trying to be rude just stateing facts. Please advise.