I have a new T3i that I'm trying to use with two Novatron strobes. I am using a pc converter in my hot shoe to wire the strobes to my camera. The strobes work, the pc cord is fine, the hot shoe works, I've tried two different pc converters, and yet the strobes won't fire when I take a photo. I've tried it on Manual, Auto, Program, all with the live vid disabled. Under flash options, I've tried both with the camera's flash enabled and disabled. There's gotta be a setting or something that I've not got right. HELP! I'm totally frustrated.