Hi. This my first post, but have enjoyed the great variety of topics covered here. There are many posts here about carbs and I guess I am going to add to that. My 88 has about 3500 miles and runs great. The problem is that is that if it is cold enough to have to use the choke. When using the choke the bike will start and start to idle up, but immediately starve for fuel. Fortunately the bike will usually start and run without the choke. The carb has been cleaned and rebuilt. The valves are adjusted, the air filter is clean, and the carb intake is in good shape. I have sprayed the intake when running to be sure there isn't an air leak. I saw one post that hinted at the slow jet, but doesn't the choke circuit by pass the slow jet? I've had the carb apart several times but must be missing something. I'm starting to get envious of the people whose bikes will only idle with the choke on. Also I live in Colorado at about 8000 feet.