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Denny, sounds like you are making progress... Did you find any plugged holes in the main nozzle? If so you might want to run it for a while then pull the nozzle back out & check the holes again, [sometimes it will pick some dirt back up until it is used for a while]. ~If it is still unstable at fast idle, you could still have a slight carb problem. While at fast idle it is running on both the main nozzle & idle circuit so you could still have a plugged idle transfer hole. You might also play with the economizer plug to see if you can alter the part throttle metering a little. ~How was the throttle plate? If it isn't centered in the bore or has worn ends it can effect the fast idle & cause an air leakage that can effect the part throttle metering. ~Try setting the idle needle to 2 turns out from seated & setting the load needle to 1 turn out from seated to see if that will improve the fast idle quality. ~Just as a "see what happens" you might try putting the choke back on a little while it's at fast idle, if that helps the fast idle you probably still have slight blockage somewhere. If it doesn't help, your problem probably lies somewhere else & maybe more run time will help. ~Keep us posted on your progress as you move along..... .
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