John, You have a phenomenal talent for explaining things. If you can't tell-----Show em. Very effective demonstration of why you shouldn't do what I have done. Thank goodness (for me)a change in tripods forced a change in ball heads which forced a change in plates that actually have a screw hole for theses devices; Otherwise I would still be hanging$5k worth of gear from a $2D ring. Why do we do the things we do [*-)]


Bob