The needle is for your mid range, not for idle. To adjust it you have to take off the top of the carb by removing the 4 philips head screws. Now when you look in there you'll see the slide, the arm that moves the slide and the top of the needle. You then need to remove the 1 philips head screw that is holding the arm. Now you need to move the pin? that the arm was screwed to. Remove the black plastic cover opposite the choke side. Theres a little spring, slightly pull that back being carefull not to damage the spring or unwinding it. That will slide the pin? so you can remove the arm and slide. Now with the arm and slide out you will see the two screws you have to remove to take the needle out. Make sure you remember how it looks so you can put it all back together the same. With the needle out, you will see the clip and notches on the needle. Lowering the clip is for richer gas, raising it is for leaner gas. Use a good philips head screwdriver as those screws tend to strip. This is all from memory so I hope I didn't miss anything. P.s I hate carbs
440, Ross 11.5:1 piston, Web cam 479 grind, race port & polish, oversized valves, hardened rockers, CRF450 cam chain, 39mm FCR carb, lightened Flywheel, Stock clutch, WB CDI box, K&N filter , WhiteBrothers E-Series full exhaust, Sidewinder Chain, 15/36 gearing, open airbox, LSR Axcaliber +3.5 axle, Houser Racing +2 a-arms, Elka triple rate, fully adjustable front shocks, +1.25 Houser swingarm, Tag Metals X5 bars, Arens +1 steering stem, Muscle steering dampener, Stainless Steel brakelines, HeatSeeker temp. guage, Pro Design kill switch, DG Pro Series nerfs, 8 run Hauler paddles. ~~http://www.sounddomain.com/id/trick440ex~~