I cant really see it, but I have to apply some real pressure to it to make it go down. At first I thought had to. THen i realized that that was the idle, and it had to move up and down freelly, upon taking it out I messed up the throttle cable, so now im not to sure, I noticed the little hole on the bottom of the barrel,, however when you release the spring it should make the needle straight, so it can line up. the carb slider did go down, so i belive that that is indication that the needle does line up, but my question is why isnt it moving freely up and down, when i first took it out it was free, I doubt i bent anything, I was pretty careful. so any advise.