The low speed mixture is too rich (how do I know? -- it would be a pain to start & it would die away at part throttle if it was too lean).

Start leaning the low speed needle (turn it clockwise) 1/8 turn at a time, with testing between tweaks.

Let it idle for at least a minute after tweaking the needle, then accelerate to full throttle & reset the high-speed needle (do it each tweak). If it staggers & stumbles when you advance the throttle, it is still too rich -- tweak it again 1/8 turn. If it staggers to a stop try advancing from idle with the glo-stick on -- if that helps, it is too rich --- tweak away pal.

If it quits cold when you advance the throttle -- put the glo-stick back on & try it again -- if it still quits cold, it is too lean -- go back anti-clockwise) 1/8 turn & try again.

It is a powerfull pain in the *****, but eventually you will learn to get it close to being civilized. I hate mine, but it it is still usefull.