Need help with timberwolf's carb, has been sitting for years, bought rebuild kit, got it running but, still havent dialed it in, local shop said the air fuel mixture screw to be 1 1/2 to 2 1/2 turns out, and the needle clip in the middle, but being older, could be moved up one notch, right now the needle clip is in middle, and the air srew mixture srew is about 3 turns out and still not right, anybody have an idea thanks