RE: !/4 scale WWI kits?
I think the biggest deviation that BUSA makes is nose and tail moments. Theres no question that a lot of WWI Scouts (fighters) had perilously short noses. The mods are made more to make the models easier to balance rather than easier to fly. Of course a model that requires 2lbs less ballast will fly better. Lighter is just plain better when it can be accomplished.
Doc