General

Where to look for aca 30?

Okay, I know this has probably been answered a bazillion times, but I can't find threads about this anywhere in warrior section. I got a 24hr 2x drop from the css and since I'm at lv 146 w/o aca 30 I figured why not look for it a bit more. I've already spent 64hrs (!) at beetles trying to get it on 1x drop, so are there
any other places, or should I just keep trying there?
Help is appreciated.