Rig beginners, or just functionless Optical Illusion?

Assembling a bit annoying. Building instructions are there but no this is not necessary, most of the screws can be found at senseless places they interfere when adjusting each other. If you give a little effort brings to the part still in a usable form.The screws must be quite so anknallen the rig also holds. Unfortunately, this is not as simple as they are made of plastic. However, these are not yet broken.
The quick release plate is made of metal and has to be extremely attached bangs thus considers this. But then she does.

The Follow Focus is completely made of plastic, if this fits properly and tightly screwed everything, does this still without slipping. Tested at the LumixGH3 with different lenses. (Leica 25mm1,4 / Nokton 17,5mm 0.95, Olympus 45mm 1.8)
In addition, I have still the Ayex Matte Box M1 dazugekauft which dissolves at least not by itself and is quite usable.

My conclusion: This rig is the best rig with Folow Focus here on Amazon. From the price - performance ratio unbeatable to use only partly. Still, I can recommend in view of the very low price of this rig thoroughly. Who however longer and more often want to film with a rig which should save a little and rather spend the 4 times to get real quality. I will keep still and modify a bit for my use