How does Grevious Baleful Laugh work

martyeigner3

Myself and a few of my guild members are getting frustrated at the rate Grevious does his laugh in Tank Takedown. It seems the faster you remove his droids the quicker he does his laugh and revives them. Today the turnmeter for his laugh was on 4 and he revived all his droids?

Zabak

Hit him a number of times (7 i believe) and he revives the droids.
+ some other things but i guess yiu already know them