Not a difficult fight, but you'll die if you don't do the special mechanic. At one point the boss will go into a frenzy and take virtually no damage from normal attacks - kite it to one of the four corners and explode a tank on it.
Probably the most difficult boss of the encounter - this is our kill of the bonus boss KR-82 Expulser. We read that some people kited when the adds came out but we ended up just separating them and CC'ing them.
tatooine: after 40 mins on the ballon this jedi failed at jumping on the roof of the crawler for first datacron...and then again failed at jumping for the second datacron*epicfail*. poor little jedigirl missed both data crons *hahaha*.