My Ariens Ikon XD 52 keeps dying! I had the carburetor replaced about 4 months ago and it's been running fine until a week or 2 ago. No problem starting it. When I start it when it's cold, I'd pull the choke and starts right up. However, when I push the choke down, it shuts off. I've had to keep throttling the choke in and out to keep it running. I'd find a spot on the choke where it would keep running but it won't stay there and eventually shuts off. I've tried adjusting the carburetor screw but I can't seem to get it right. It still shuts off. The only way I can keep it running is if I'm constantly pulling the choke up and down. Any advice would be helpful. Thanks.