Is that the fight against the ahriman who summons a dragon? If so, the fight is ridiculously easy. I've beaten it solo on Samurai using 2-hour.
Honestly if you didn't get a reply on the Carbuncle server forum, it's unlikely you'll get one here. The best place to look is either your server forum or in-game. Sorry to hear that you're not having much luck, but hopefully you have at least one or two friends who can help you with this. You don't need 6 by any means.
____________________________Pergatory (Asura, Kupo LS) WHM99 ~ SMN99 ~ DRK99 "If you want to know me, look inside your heart." -Lao Tzu