Built a couple of the old original ones years ago with .60 engines in them , built kind of heavy but flew quite well in all conditions . Built the new one when it first came out & thought it was MUCH more labor intensive than the old one . Mine had the tip up wings , seemed to fly funny . Had flaps that were very effective & didn't change trim when deployed. Flew fast with a Super Tiger ABC .61 in it . Sold it as I thought it just didn't come up to the old ones & I was spoiled by them . Maybe it was the bent wing ? Have fun , MAX H.