The problem with the parting clamping I had. A new self-locking nut for 35 cents is the cheapest solution. Gibts in stores individually, at the hardware store in sets of 5 and is significantly cheaper than the screw locking.
I use the tripod with a Metz 58 and a screen or a Firefly II. For this purpose, it is stable enough and yet so light that you "has quickly thrown times in the trunk" it. It is supplied with a practical bag that is a bit too small if you want to be screwed a flash Eiger.