I have had a 60 size pica spitfire with retracts and it was a nice flying plane but i had to fly it with just a touch of down elavator trim to make it fly straight and level , and it took very little elevator through to fly it . too much through will cause you to high speed stall . If i set the elevator level the plane wanted to climb , so i flew it with some down trim . I now have the PICA 88INCH SPITFIRE and am finding the same charcaristics with it . I am flying it with a little down trim . I havent used the flps yet because the plane has a lot of lift with the big wing , but i will use them on the next flite . I also had to cut the elevator through down on it . Hope this helps Tom