If you plan to solo Ruby (recommended), use the J-7 zone to your advantage. Silence-pull Ruby, which will also aggro Darksteel Quadav & Platinum Quadav (Be sure you are fully buffed). Allow the Quadavs to catch up to you next to the zone then, you zone. Zone back into Qulun Dome IMMEDIATELY and Ruby will still be there (still silenced), waiting for you without the Darksteel and Platinum. (*Note that they respawn quickly at the open end of the tunnel, so make sure Ruby is well out of their link range unless you want a headache from excess zoning.*)