Yep, the twisting of the armature is my only complaint so far... I wonder if it would help if instead of the piece that inserts through the metal which you tighten with the allen screw being completely and smoothly round -- if it were machined to have a multitude of flat edges on it so the allen screw could "seat" more firmly against a flat edge?

I may suggest that to Mark, the technical advisor for Muzzy...