I can’t mod it for you (very difficult what I’ve read) but just came across you’re similar post from over 2 years ago! 
Do you already have one?
I’ve been considering this light for years, been on the fence that long because of the faulty switch reports, kept thinking they would revise it or someone else would come out with something to compete with it (in size) but since neither has happened in over 2 years I think I’m finally going to give one a try now.