Hi Harry S, i have the bigger one with a ZDZ 80RVJ in it. Flies great. Only thing with the bigger one (might be the same on the small one) Is the horizontal stabilizer is not the strongest. I got given the plane as it had crashed due to this breaking during flight. I now have a 2.5cm X 3mm Carbon blade the whole length. As for flying no real problems needs a lot to hold it in a right knife edge, but thats normal for a pitts.
Mine still has the original U/carriage legs again no problems with these but i would reinforce the mountings.
Photos are during the rebuild (4 out of the 5 wing panels were destroyed) and after the first flight at our local runway.
Enjoy
Andy

