Bubba, I have a word of gratitude and a question. First, the thanks. I used your suggestions to set the high speed adjustment on my OS .46 AX this afternoon, and it works perfectly. Now I need to set the low speed idle. At idle, the engine seems to run fine, but after about 30 - 45 seconds it shuts down. My problem is that I cannot find the throttle control adjustment located anywhere in the materials which the manufacturer supplied. I see a screw which is located just behind the carb. Is that it? If so, how in the world do you get a screwdriver on it to adjust. It sits between the carb and the cylinder head. Any help you can give would be appreciated. Thanks.