The smithsonian Albatross book goes into detail of the trailing edges, but to model it is much harder. The scalloped look comes from the shrink of the covering against the wire, and when the Smithsonian restored their Va they only put in about half the tension because they were worried about long life. I think the tension was to be something like 75 ft lbs. I dont think you will get a natural look with shrinking with even spacing. If you need wire, music wire bent to your shape; you probably know Mick Reeves uses this. I plan to build a Fokker D7 1/6 soon and the plans show thin ply( I think 1/32) shaped edge inset into the trailing edge of the ribs.