Hey Folks. I got my son an 03 trx90 to get him into quadding. I have an issue I am looking for help with. I recently rebuilt the carb and afterwards I cant get a consistent idle out of it. It idled fine before I rebuild it. The idle is supposed to be set at 1600rpms however when I adjust the idle to or near that range when I let off the throttle the idle hangs for 5-10 seconds prior to returning to the 1600 rpm range. way too much and too long to deal with. When I go to adjust the idle screw, even the smallest turn will cause the idle to drop to the point of stalling. Sometimes I can get the idle adjustment close to where I want it but within 5 seconds it drops way down and then stalls out, especially after feathering the throttle a bit. The fuel/air mix screw has been adjusted in several different positions and has not helped the issue. I then ordered another rebuild thinking I may have gotten a faulty one. Same issue. I ordered another piston slide and needle thinking that might be the issue. Same problem. Compression is good, new plug, tappets are adjusted, intake boot is good, all the intake seals/gaskets are good. The vacuum lines to the air suction valve are good. WHAT AM I MISSING!!!!