Here is mine.
Fox .46 BB ABC. I had a problem with the wing and ailerons fluttering at speed with that engine. I put shear webs on both sides of the spars and also up against the rear sheeting and then I went with a servo on each aileron instead of using the torque rods. Every thing is fine now. Getting up over 90mph and it rolls 3 times a second (I have a lot of ailerons on high rate.) I also got rid of the chin in front and faired the front end into the wing better.
This is my 4th Smoothie in 20 years and I love the way it flies. I have 2 more still NIB for future needs. I have done very well with the Smoothie in "fly what'cha got" pylon races.
Don
