Thanks for your feedback.
I have finally been able to go back to spend sometime on the ST, unfortunately I couldn't find anything major. I found that the trailing edge of the right aileron had a sort of bump that may have induced some sort of twist, I worked on it with the heat gun, it is better now but still not perfect and I do not think I will be able to completely straighten without removing the covering. This is something I noticed when I was building but completely forgot about. I re-checked the incidence and thee right wing tip is now 0.5 degre lower than the left one and there is 0.25 to 0.5 difference between the stab and the wings, so if I remove some error margin there is not much left. I hope I will be able to fly it soon and see what happens...
Appart from this problem I cannot complain, this was the best ARF I had ever built, good hardware; OK my pevious one was an Edge 540 - 120 from Wildhare... It was easy to see the difference.
Thanks,
Chris.