Hi. First time I’ve ever posted to a forum or anything like this. I have a 96 300 express. 2 stroke. I’ve removed the oiler and mix my own gas. It started running poorly a while back and my son told me that he had to have the choke on for it to run. Checked spark and it seemed fine. Wouldn’t start so I figured an old carb was having problems. Put a new plug and carb kit in it. I will only start if I have my hand over the inlet of the carb, then it dies. Any help would be appreciated. Thanks