I bought a Mikuni Carburetor from the junkyard so I could mess around with it and not damage mines. Examining the carburetor I noticed that the choke on the junkyard carburetor is adjusted differently. Like the accelerator is actually touching that thing with the number 19 stamped on to it. It has 19 stamped on it and appears to have lines for something. Here is a picture:

Attachment 18310

Now, if you take a look at my carburetor that was adjusted at the carburetor shop, you can see that the accelerator is not touching that thing with 19 stamped on it. I am guessing this has something to do with the way my truck is acting up.

Attachment 18311

I started up the truck to see if it would touch the lever with 19 stamped on it and it still wouldn't. I don't know if this is supposed to be touching or not, but it seems that on the junkyard carburetor it is touching. I thought to myself, this might control the idle because my truck shakes like an earthquake when I cold start it. So I decided to test if the idle is the culprit. I did this by loosening the accelerator cable and tightening it just enough so that it gives it a little bit of gas. I think this is supposed to be automatically done by that lever with the 19 stamped on it. After doing that I fired the truck up and she started on the first crank and now that horrible shaking is gone. (I will put back the accelerator cable as it was because I don't want the truck to always have the accelerator on. This is not a fix, only a test.) With further examination of my carburetor I noticed the idle screw is threaded in all the way, making it so that the accelerator doesn't touch the lever. Thanks to pennyman1 and messing around with the junkyard carburetor, I am almost certain that the choke is not adjusted correctly. I think this is the case because I notice that the choke butterfly doesn't move at all and what moves it is the lever thing and it can't move it because it's not touching the accelerator in the first place. If my understanding of this is correct, that is what makes it go into high idle. Now my question is how do I adjust this choke?