Alrighty, I think I'm in the final design stages, and then I'm ready to assemble this sucker. However, I've researched a lot of the sabers you folks have built with Tim's holder, and I'm seeing the thumbscrew placed in two places: sometimes it's on the "head" portion of the holder, and sometimes it's on the "thorax" (huzzah for insect terms...).

Is there any one placement that ensures better security for the blade, or do they all work just as well?