Did it. Wiped 3 times getting to the dragon (some of those folk hit really hard), but got the dragon down first try.
There were two things i was doing wrong.
1) spacing - i had everyone bunched up, so one fireball would mess me up
2) facing - turning the dragon 180 degrees.
Spread them out and turned him only 90 and he was down first try.
Thanks for the help.