I rebuilt my carbs using a carb kit and noticed one carb has a stationary tube that goes vertically thru the carb. On one carb the tube does not move and on the other carb it does move up and down. My question is: is it suppose to move or is it suppose to be stationary. The manual doesnt actually address this issue and the Bombardier website doesnt even show a diagram that I saw showing this tube nor did I see it addressing it. If I need to post a pic I will later but I am hoping someone much smarter then me will know what I mean. One end of the tube is in the center of the float bowl the other end is in the neck of the carb I am assuming it is brass.