I've been watching a ton of videos and compiling a lot of great information but there's one particular thing that came to mind and I'm not sure how best to do it:

So when you're assembling a neo pixel blade (or any blade I guess), the hilt-side PCB can go into the little plastic holder but how do you get that holder to stay put in the hilt when the blade isn't there? Or, in fact, when the blade IS in place...How do you keep it from floating around in there? I got an ultrasaber stunt saber just to kind of play around with and take apart for research and the little LED cup is just...dangling in there. Held in place by the switch wires. I'd like it not to slide around PLUS it needs to be solid so the neopixel blade can make contact with the PCB, right?

Do you pop in a set screw or is there something obvious i'm not seeing?