Finally, the Vanquish in question is mine I had trouble getting in to post, elevators are at 0 deg, throw,s and tracking have been rechecked and are the same. Plane does not drop a wing while looping, pulls to vertical or from vertical do not seem to drop a wing, with 13 deg travel on elevator it will snap out to the right. This is very unnerving at bottom of the z, I have reduced throws to 11 deg to prevent the snapping but haven't flown it yet. Wings are at .5 deg positive, all set with digital level. Open for ideas.? I,have never had a pattern type plane theft would snap out. Might just be the way it is. Thanks