Thank you for the rate :)
I've changed Zapdos EV-Split to 252 SAtk, 156 HP, 100 Spd to outspeed modest chandelure. I love my Latios set, but you're right: I need the Tailwind. Protect and Substitute work great together. Dragon Pulse and Draco Meteor are great too, I never needed Physic, Draco...