Ok here's a little video
YouTube
It's kinda hard to see, but if you look at the reflections you can see the movement. On the right side is a deep cylinder with nothing to tighten in there. The other side has an Allen bolt. But the other side is not loose at all.
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Rosewood 1983 911 SC Targa | Black 1990 944 S2 | White 1980 BMW R65 | Past: Crystal 1986 944 na
Guards Red is for the Unoriginal