With the fully assembled first prototype, the expectations regarding the functions were accordingly high. Unfortunately, the wings, along with the rigidity of the construction and the servos used, began to tremble, known as servo-jitter. In addition, radial bearings were installed on the opposite side of the servos for support.

But there still was servo-jitter. In the end, the challenge could be met with a different air vanes resulting in smooth vanes movement.