I can't get it to fire in 18350 mode. I got two new efest batteries today and charged them up. The charger says they are at 4.2 volts so I know they are good. I have sanded my contacts so do you think the bottom contact isn't reaching the battery and maybe I should take some metal off the bottom of the silver telescopic tube. Only thing I can think of is the mod is bottoming itself out and not reaching the batteries.