see this pic - "A" is the idle mixture adjustment, turned alla way in, the engine should die - "B" is the idle speed adjustment, which should control the idle speed regardless of the choke setting, except that choking it will move the cams the lever presses against ... you may have gotten the main lever [with the B adjuster] on the wrong side of the top or bottom cams ... so yes, you may have got things together wrong

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics