hey ultimist. another guy had the same issue on another post. i told him to just go grab a tube of ox-gard from home depot. all you have to do i take your switch apart and put a tiny dab of ox-gard on the two metal contact where the metal ring on the button hits and it'll fire everytime. ox-gard is an electrical conducting liquid material that provides improved conductivity and a cooler connection and that tiny little bit of material will bridge the gap between those metal pieces in the switch that are the cause of your misfires. it's completely safe and will not short anything out. i've been using it for a few weeks now. it's awesome. and the ox-gard is only $2.50 for more than you'll ever use. just make sure that about every two weeks you clean it up and re-do what i just told you. it turns the v2 into the most reliable and super sweet machine on the planet. also, i put a little dab on the adapter contact post for better performance as well. but yeah, it works and takes under a minute to do. c ya.