If you have a carb that you can’t get tuned, swap it. Swapping it is a very simple process that anyone with a little basic knowledge and time can accomplish, I'll show you how in this video.
I have been really happy with the "PZ20" carb's. I've picked up a couple of them and they've always run great, right out of the box.
This is the actual carb I use in this video, this is an affiliate link and I may receive a small stipend from Amazon if you purchase from this link. https://www.amazon.com/gp/product/B07...