I think he has it at 1 amp which should be to low, but do recall him mentioning worries about safety and a normal user, not sure if I followed him correctly, but interesting that you mention that particular driver because I thought the same thing but was no way sure of this, but had been following this thread, Buck and Boost Drivers, Testing, Modding, and Discussion (Pic Heavy) and it was sure ringing a bell with this light in particular, there’s some good info on that thread re: the KD drivers and resistor mods and so I’m with you on your thoughts here.