Good part with small weakness

I use the rail for 2D, 3D panoramas and as a macro cross-slide, in conjunction with other parts of the company. I like it very much to be able to build from little components a variety of devices. In two minutes the desired object is assembled. So it must be. One criticism I would have with regard to the dragonflies. These are installed at an angle with my plate. You can see it with the naked eye or grope with his finger. It would be better to incorporate precisely the dragonflies (can be easily controlled with your finger) or omit it altogether and instead to place a wide-quality dragonfly on the uppermost component. This also applies to all other components with dragonfly. What is not tuned can not fall off too.