Im running 18650 yellow jacketed mxjo's(2-3months), 18650 lg he2's(6-8months old), and 18500(2-3months) yellow jacketed mxjo's. All fire my herc fine,with 3.7 rod or 7.4. I got the 7.4 to fire a couple times on my v4 by holding the button and screwing it on, but that was one hit. Would a V2...