I took my mage/mage/pally trio into RFC @ 11 and got WTFPWNT by the first mob...

I went back at 14 and can clear without any problems down to the first trog pit and the 3-pulls there. I'm polishing my macro setup by doing a fight, figuring out what went wrong, and repeating...

A few tips I've come up with.

Focus macro's rock for mages and CC, I'd assume the same could be handy with fear for warlocks.

Target info takes time to travel from 1 box, to the server and back to the other boxes. Be careful with how fast you fire after targeting... I targeted and immediately hit my mage nuke button and watched as both mages nuked different targets than the one I had already agro'd... turned a nice 3 pull into a nice 5 pull...

Mark targets with raid target icons, only the raid leader can do this, however it makes it VERY much easier to track which sheep broke (or fear) etc.