The head of my Micro model is flimsy

Hello,

We bought the Micro model for our bedside stand, and only after a while realized that the flimsiness in the top joint (where the bulb sits) is not supposed to be that extreme. :D

We literally cannot set it any way, it always falls down.

Would anyone know how to tighten that joint?

I removed the 2 small black caps on the sides, in hopes there would be a screw or two for the springs, but no luck there.

Thanks!

D