Take the top cover off each carb. Then using a 2.5mm ball end allen wrench, you'll see 2 black screws inside holding it to the slide. Remove these and then the piece these screws are in. The needle is under this. Becareful not to loose the tiny washers which could either both be under the clip on the need or one on top which sometimes sticks to the piece I said to remove.
So i found the socket head screws, and I got this off, now what? Lol, this damn sled is pissing me off today! Good needs did get all the pipes in which was a fun puzzle.