Hello I just purchased a V4L extra long battery in order to increase time between charges , sometimes my v4l carts just arent producing though certain flavors like the 555 WoW vapor just PLUME SMOKE ! But other cartridges produce hardly anything ? Will a shorter battery increase vapor ? And also if not has anybody else experienced this inconsistancy with the carts from V4L the reviews are always so mixed. If im getting from the wrong place where can I get the best KR-808 Cart ? I need VAPOR !! Quantity vs quality and no im not interested in changing to another style like a 501. 
