I have the Wolf Eyes Rattlesnake, I am considering purchasing the lrb-168 extender and a EO-13 lumens factory bulb for it. Problem is I only have the 4 led tailcap for this light, does anyone know if this will be a problem? 3 18650 could give me as much as say 12.7 volts at the tail (this would be a little high I know) What sort of voltages is the tail seeing with 4 primary 123's? I know they have to be a little higher than 3v new, so I am hoping this will be fine.