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Hi, I have a 1991 King Quad that I bought that needed "carb work". So I bought a rebuild kit and installed it, checked and set float height. It idles okay, but when I give it gas it stumbles all over itself. On full throttle it suddenly comes alive and pulls and pulls. It is rideable, but only marginally. So I was examining the slide and diaphragm, but at the bottom of the slide, there are three holes. One in the middle for the needle, and two on each side of it at the bottom of the slide. What are these holes for? I can see daylight through them so no vacuum is being formed in there, it is being sucked out of the two open holes. Is there a spacer or something that blocks these holes? I might try filling them with silicone and seeing how it runs with it in there, because it is not running right right now. It acts lie there' no vacuum pulling the slide up, only at WOT.