I got up early and rode the DRZ over to the airfield to take the plane out. On my first takeoff, the engine coughed a little, so I landed and took a look at it. Everything looked fine, so I'm thinking it's because I didn't have the electric fuel pump running (the 582 can pull more fuel than the vacuum pump can supply). I went back out, with the electric pump running, and everything was fine for several circuits, so I called that fixed.
When I got down, there were a bunch of guys over at Will's hangar, looking at his plywood spinner - there are a couple of cracks forming in it, so we all stood around making helpful suggestions on how to fix that.
I picked up some new jets for the carbs, and found that Chris was trying to clear a virus from his PC, so we played with that for a while, and I suggested just reinstalling Windows over the top of his current installation.