Well today's attempt to fly had some good points, but mostly bad points. The good parts was getting to watch Tank fly his Sig Four-Star. He can put on a pretty decent aerobatic performance. The bad points were with my plane, specifically the engine. After I started up, it wouldn't run correctly. Every other time, it would idle pretty reliably and slow. But not today, it went from a really fast idle to dead with only a few clicks of the throttle. After Tank fiddled with it for a while, he noticed that the carb moved around a little bit, so he looked closely at it. Turns out, one of the two screws that holds the carb on was missing. That explained why it wouldn't run right. All that air getting in without going through the carb makes it a little difficult to get the mixture set right. Tank has quite a few spare screws, so I looked through everything trying to find a replacement screw, but I had no luck. So I didn't get to fly today. To make it even worse, while I was putting my plane back in my car, Tank noticed that the screw that holds on the control horn for the rudder and nosewheel was missing. I appearently have a bad engine vibration problem, because other stuff has loosened up before. So I'm going to have to find ways to secure all the screws, but have it so that I can still remove them if needed.