I built a pinto a few months back. All the parts were an exellent fit,if a little tight in places,better too tight than loose! I modified the front of mine and fit an SC12 and also modified the fin to include a rudder. I was told by many that it would be way over powered and would rip to bits in no time,would be heavy and hard to balance. Allthough i had to add a small amount of weight to the tail to balance it i can confirm the plane really flies beutifully and will do all aerobatic moves with ease,it flies like a much larger plane and isnt twitchy at all like a lot of smaller planes. I mounted a 1/4 ply firewall farther back in the nose behind one of the existing formers with a normal plastic engine mount and a 2oz tank behind the firewall,the hatch was modified to fit nicely round the motor and i used a 6 gram servo for the throtle. It is so easy too hand launch,a gentle level through at half throttle is enough. belly landind is easy too,cut the throttle and it glides like a good un. I didnt find anything hard about building the model,someone above said the top rear rolled turtle deck was not good enough,i had no trouble whatsoever in this area,cant see the problem. I bought this plane as something to do and to use up some spare servo's and an SC12 i had around and its turned out to be the plane that lives in the boot of my car ready to fly whenever the chance pops up. It isnt a trainer but its not hard to fly at all,its not a 3D machine that can bite,just a nice sport aerobatic flyer,just small. Id recomend it to anyone,especially with an IC conversion,or brushless/lipo setup. Its meant to have a speed 400 in it which iguess would give really poor performance. Ive got some pics if anyone wants to see.