Hi, brand new here, I've done searches, and while there seems to be lots of great information on this site, I haven't found my specific challenge. My son and I are doing a little mower rebuild project this summer. He bought an old MTD Lawn General mower and has been working to clean it up and get it running. We've made a lot of progress and actually got it to start today. WooHoo!!! It started right up and ran at a high rpm. Adjusting the throttle didn't make a difference and as soon as you took it off full choke, it died. I only see one adjustment screw and it was about 3/4 turn out. Where do I go from here??? Thanks!