A lengthy review with the usual vice fixes is on my blog, but this short story emphasizes what a great little flier the ATY54 is:
After changing out the receiver from OrangeRx to Spektrum, I was anxious to give the Yak a quick test flight before the winds picked up--they where starting to churn. Popped a battery in, and zoom... oops... the Spektrum receiver wasn't working right either, the plane kept wanting to climb under power, under more power it wanted to hover, and under max power it wanted to loop. At half power, it leveled out nicely. Strange.
And that's when I realized... I forgot to hook up the two tail servo extensions (see attached pic, beneath the rear canopy attach point). I brought it onto final without any fuss, and with a touch of throttle to flare followed by a mild chop of the power, the plane was really easy to spot-land with just aileron and throttle. So easy, it made me wonder what I do to screw up all those landings with elevator and rudder available.
Moral of the story: 1) the ATY54 is a very capable and fun 3D airplane. 2) Do a complete flight control check and run up before goosing the power for takeoff, no matter how comfortable you are with the airplane.