Problem with Idle Control Valve 88 4.0L Renix
 

I've got a problem with my Idle Control (stepper motor) Valve on my 88 Comanche Chief.

The Idle went "wacky" so I removed the idle control valve and the plug was un-screwed from it's threaded metal mounting shaft inside the motor.

From what I can tell, the plug is threaded onto the shaft and the threads "let go".

My question is....Can I simply put a small dab of JB Weld on the end of the shaft and screw the plug back on?
Is the plug depth adjustable...hence the threaded section?
Does the shaft (and plug) rotate when the motor is in operation?
I think that the threads are simply stripped in the plug.

Is it repairable?

thanks
steve

New IAC on amazon is around 20$ IIRC. The one I got a couple years ago was made by standard motor products.