Dennis,

I agree, the Sukhoi shouldn't do that. It appears to be a good building job. The wing is straight, the wing and stab are perfectly alligned and all control surfaces are straight and alligned.

Some additional info we found out today, it does the same thing when given full elavator without any other control. It usually goes right but sometimes goes left and very sharply.

Also, it looks like the wing had dihedral at one time and is now perfectly straight.