Am experiencing an aggravating problem and wonder if anyone else has had and solved it?
Mounting my RD16 on Manfroto's 3416 levleing platform. Cannot "lock it down" tight enough to avoid its loosening when rotating counter-clockwise. It is not always feasible to rotate only clock-wise when making "fine" adjustments for a long lense panorama.

I am reluctant to use a lock washer because of its thickness and the resulting upset to balance and leveling.

I am about to experiment with Lock-Tight on a nut and bolt to see if it can be undone and undone without damage when doing so. As I have never used it before I thought I would ask if anyone knows of anything I should be wary of in using it or if there is some other solution.