i usually use a 901 atty on my v2 kr808 bats. just got a glv and with the 901's its fine but when i use these new 510's its a super SUPER burnt taste no matter how much i blow it out and run water through it and keep throwing juice into it. totally gagworthy burnt taste. had a similar problem with some of the 901 attys but it seemed like after i used them a little and kept putting juice in it would eventually just taste normal. but i have fiddled and fussed with this all day and i almost threw up earlier.. any suggestions??