New member here. My problem with bogging down, running rich, and no takeoff power has been traced back to the gears on the choke mechanism on the carb. It is stuck to where the flap is in the closed position, and it will not release as the truck warms up. I have watched a great Youtube on the same problem but the movie never seemed to disclose how this was fixed. I have sprayed it with some PB Blaster hoping that it will free up. No change after a couple of days. The only way to get her to run normal is to unscrew the choke flap adjustment screw until it releases pressure and lets the wheel roll back (open carb). I am basically removing the choke mechanism but not allowing the screw to fall out. This will obviously prevent cold starts and various other issues if I settle for this. My question is, how do I permanently fix a stuck choke mechanism? I will also add that there is a vertical spring that somehow works with the gear and I believe it is what triggers the wheel to move. It doesn't seem to be doing its job, but I am not sure how to address. I have hears about the wax pellet heating up, sensors and various other components but do not understand where they are located. Lastly, the truck has had the carb cleaned (and reassembled -- could have been source of problem), new fuel filter, plugs, distributor cap, and wires. These seem to be in working order. THANKS for any help!