A buddy of mine has an 83 Sportster 1000 cc panhead (I think). He called me last night asking if the carb can be adjusted. I don't know much about these bikes, but im an old car mechanic. He said it smells like gas when he is riding, and it is running rough. So, im geussing its running to rich and fouling the spark plugs. Is there a air fuel mixture screw somewhere on the carb? Is there a standard procedure for adjusting this, or does it need to be re-jetted? Anyone have any other ideas of what might be wrong? I wanna help him get it smoothed out by this weekend so we can go riding. My 03 Deuce just arrived and I get to pick it up Saturday.