Thanks for the help duece, but those pics are hard to make out. While I was looking the carbs over I found a threaded hole that goes into the top of the carb. What could this be? I took a pic and put arrows on it cuz its kinda dark and hard to make out, the red arrow is the mystery hole, and the 2 green ones are the gas fittings, which I'm still not sure how to set up.