Hi, I would like to direct this question to Arca Swiss Z1 users. I just acquired an Arca Swiss Monoball Z1dp quickset classic. I just wanted to confirm if this is normal - when you tighten the multifunction knob (to 6 for example), the knob can be moved outwards and inwards slightly (in the axial direction, not rotational direction) and wobbled sideways slightly? This "freeplay" goes away when the multifunction knob is loosened (to 0 for example). I can also see some kind of oil film in the gap between the knob and the body. Just wondering if this will attract dirt over time.




