Well, I received some input back from Saberforge in case anyone was curious.
Looks like the LEDs are in fact different for ASP and the thin-necks should come with reflective film. I have 3 ASP thin-neck emitters and a Redeemer hilt that do not have the film included so they are going to send me to strips so I can install the film.
Here is what I got from Saberforge.
1) ASP LEDs are different, you can purchase an 12W LED module with quick connects just be sure to indicate in your order comments that it is for ASP so you can receive the correct LED.
2) Yes they should have had the reflective film included, we are very sorry that this step was missed! If you are able to add the film yourself we can send you the sections, they just roll up and slide into the emitter.
Once again, customer service does a great job of taking care of us.