I get the exact same results as Murray.  The only way to get the Fuel, and Payload to go in, is to Save it, and to Fly Now.  Additionaly, the cockpit section on occasion will not remember its settings when I open it, where all the other sections will.  Not a big deal, just thought I would mention that.  

And I get a 'List out of bounds' error when loading the last added aircraft in the list after a while.  I have to remove it, and re-add it.  

James