Does anyone have experience with Dyna-Lite strobes? I have a few questions. I was gifted a hodgepodge of Dyna-Lite lighting gear. I’m a bit confused about some things. I’ve never used this brand before. Aside from one head (4040), I don’t see a way to put reflectors on the other heads (2040) (1836-01). They’re just bare bulbs. There is an umbrella slot though. Are these meant to just be used with umbrellas? Maybe a so…