I've got a question about how things are set on fire. If you're caught in a Flamer's arc and you fail your Agility test, normally you'd take damage then roll for catching fire. But if you don't actually take any wounds from the blast, do you still roll for catching fire or not?

Yes. If I wave my cuff over a candle, it's not going to hurt me initially. But it might when my shirt catches fire!