idle keeps dying after warmup on 83 aero

[dwpedalplayer]

Prrs like a kitten when it first startups- for about ten minutes, but once its warmed up it slowly trails off to a stop.

It idles upon startup at about 800.

And no matter if I am adjusting the throttle stop screw nor the air screw, have made a difference. All the way in, or all he way out. Really odd.
The only chane is in the actual throttle screw up near the throttle, but that has nothing to do with the jetting and such.

Gods of Scoot, toot your horn.

[Wheelman-111]

Greetings:

It sounds like it can only run off the bystarter circuit. When that closes as designed, it slows to a halt. That suggests that your low-speed jet and/or passages have become caked with fuel residues.

Everyone, all together now;

CLEAN THE CARB!