You likely need to lean the low end just a hair. It doesn't take much of a turn.... Just enough to see it move. First thing to do is when your engine is idleing pinch the fuel line and listen to the engine. If it keeps running for about five seconds then revs up and dies, it's rich. It needs to slightly rev up and die a few seconds after you pinch the line. You may need to adjust the high end a little after you get the low end right.