I have a brand new Joye LR 510 that I've been using for a couple of days. It has a burnt taste that just won't go away. The one I used before this one (same batch from the same vendor) worked like a champ for over a month. Yes, I blew out the primer and yes, I'm using it at 3.7V. Is there anything I can do, or did I just get a lemon? Thanks!