I just replaced the 15 year old carb on my sportsman. When I bought the carb I was told it was ready to go, just change it and go!………NOT!! It starts and idles just fine but when I touch the throttle it acts like it will stall then it clears up. When I pull out the choke it runs better all the way through. Can someone please tell me what the hell I did wrong or how to straighten this out short of removing the damn carb again! Lol. That choke was a royal pain In the …!! Thanks!!