Tried first BG's as multiboxer tonight, not sure if this is just something I have to live with or if I have setting wrong. I have 3 priests, on each I have cast sequence set up for vampiric embrace, shadow word: pain, mind blast, mind flay. The catch is that they never seem to be on the same step when in pvp situation. I know they are in range, I don't get any notice of problem, just often one of them won't cast the first time, then they are one off, so then when I get to the longer casts they are getting interrupted or one is just standing there. How are people dealing with this?

Thanks in advance for any help.