I tried to do this quest 10 times with my 52 lvl operative. It's abosulutely impossible. It kills me and my companion while I'm killing droids. I done all other quests, so I can't rich 53. Any suggestions?
Of course you can reach 53. Do some dailies or flashpoints or something. Come back when you are level 55, if it's giving you that much trouble.
As for fighting the droid, trying to do the mechanic with the baby droids got me killed, it was as buggy as hell and the game wouldn't let me target them half the time. When I switched to ignoring them, standing behind the droid and just burning down his hit points I did it first time.
Another solution: Bring a friend. I have helped some people do it, and with two players it is laughably easy.