Do me this quick release plate screwed tripod on my old Velbon. I then noticed quickly that the board was "too small", is to say, the big gray lever is off the plate a little and is thus at my big tripod plate. I had to say transversely to the normal direction of the stand and its lever mount. The first time you use me then the small pin is equal to one counter jumped, which is tensioned by a spring, the unintentional loosening of the plate from the bracket to prevent. Namely turning the gray lever 1 mm too far, the locking pin pops out equal. Not good. So if such an old tripod as I did, that no longer really does what it is intended, should rather engage as for a new tripod incl. Quick release plate. The tuts here only in emergencies.