MattCA

My friend is giving me $50 to sell his 50 for him. Anyways, I got it to run but there are some problems. First of all, it doesn't idle with out giving it gas. Which screw is the idle screw. Which are the others? Thats the main thing I need to fix. The second problem is, for some reason the choke does the opposite. The engine wont start or run with the choke on but will start and run with it off. Thanks for the help.