I all fairness to Great planes...:::
If you look at the competition...they do NOT EVEN ALLOW you to attatch the control wire to the control
horn in any other position other then the very HIGHEST TIP of the control horn...

Easy fix.... One then HAS TOO use a lONG servo control horn...

Great planes has always taken care of me... I think they gave you a fair assesment of your plane and the crash...
THe flutter occured do to a too low of attachement on the control horn..

i do not see why they didn't replace the plane for you...being they have always taken care of there customers...
Always gone WAAAYYY out of there way for me...

Always be a customer of theres...