Just gettin back from a trip, thanks for y'alls comments!   
I know it doesn't get cold in MS, I'm actually a yankee.  But the only time I have this problem is when it gets "cold" here, from October to March or so.   
The longest the bike sits is a week, but that isn't the problem either.  I clipped a lamp on it over night and it started right up, went to work.  It was a little windy & chilly, and at my lunch break 4 hrs later I had to fight to start it again.  I think it's getting worse.   
If I don't use the lamp, I have to let the bike run for a few minutes before I ride.  If not, I get out on the road and as soon as I hit the highway (40mph or so) the bike starts to stall out, and I have to start all over.  It's cuz at that speed, the wind brings the engine temp down again.   
I just filled up and am going to put some stabilizer in the tank to see if that makes a difference (not expecting it to).  And I'm going to read my Clymer manual today, I promise!  Got to look for these "carb warmers", as the p.o. had an air horn and 12v adapter installed.