(Had to remake the post due to idiocy on my part. I didn't block out my chat box :x )
I told Kara I'd record myself doing Razorgore as balance so I did that.
Basically break the MC occasionally to keep Rejuv on yourself to hold healing aggro on all the scrub adds and tank them most of the time (when you're doing the eggs in the back, you can afford to AoE some of them down since Razorgore wont be nearby to get caught in the aoe). You can also toss a Rejuv on Razorgore while you're channeling the MC and it'll heal him (though this breaks the MC, but this just gives you time to put a rejuv on yourself as well). Just keep an eye on your debuff that keeps you from using the orb again and don't break MC unless you can use the orb.