Thanks rajul. Seems like this thread is losing it's steam. I bought an in the box UCD, and then found a used one with an OS .61 on which I bought too. Althought the .61 is not a rocket motor, it is adequate for most of the 3D maneuvers. I cannot get it to run consistently (needle valve) so I am replacing the carb with a Perry as we speak. That being said, and having flown it a very little bit, I've found that with the right set up the plane will knife edge rather well. My cg is past the 6" mark and I use a low rate rudder with some elevator mixed in. No aileron mix is needed with my plane. You have to expect some mixing on almost any plane, and I find this one within acceptable limits. Maybe others are using too much rudder which will tend to couple the plane. My 40% Carden Cap will couple in hi alpha knife edge if I don't mix it out. I really like this plane. It's miles ahead of a profile (which I learned 3D on) and is a nice blend between precision aerobatics and wild hoverbatics. If you learn to point roll you will have the building blocks to do many things. From there you can do 4/8 point rolls, rolling circles, k/e passes etc. Although I don't think the mis-alignment is your coupling issue, I would try to correct it the easiest way possible. Not sure if you should do it in the wing or the stab, but do it somehow. Let me know how you make out, and what kind of coupling you are getting. Take care_bob