Tuwood- They improved the efect of gravity in G3.5 to make planes fly more realistic.

I bought the add on 4 that has an Edge 540 and changed the color scheme to match my Goldberg 540. I reduced the mass to .9 to make it fly like my real plane. This flys much better than the Yak. The stock 540 has a 87 inch wing and weighs 23 lbs. Flys well with the 3w 70cc engine.