I just got an ego twist 1000mah battery yesterday, and have been having issues with getting burnt tastes, even when it is dialed down at times. I have two vivi nova tanks and am using the 2.8ohm heads. I also have some tabac bcc bottom feeders with resistance varying from 1.8-2.4. All these variations have been giving me that nasty burnt hit every so often. I have dialed down all the way to 3.2 volts and still occasionally get it. I'm upgrading from a standard ego-t 900 mah and did not experience this so often with it, and only when using the 1.8ohm atomizers. I'm not having any fun with my twist! Any advice? Could there be something wrong with the twist? Thanks!