I am at the missile base. There is a huge blue metallic boss by the end. I am causing 750 hits of damage per Quezacotl summon with Selphie. Other GFs are causing 400 hits of damage.

How do I split magic among all party members equally, but not picking them one by one? How can magic be junctioned to the strengths of all party members? How do I beat a boss without summoning GFs?

Finally, how did you beat BGH251F2?