I need help on getting through Ultimecia's castle especially with all my abilities being selaed and acquirng the G.F.s Eden and Bahamut. I don't know how to unseal myself and also did I miss any oppurtunity to Obtain Eden and Bahamut on disc 3 becuase I went direclty to Adel when I was trying to go to the final boss.

Eh, lol.

You'll have to go through the portal that leads to the forests of Grandidi in the World Map. Find the odd-shaped bump in the forest line. Get a chocobo. Ride it in the shallows and what not all the way down to the Kashkabald Desert where the Ragnarok will be.

Fly to the obscure corner of the world and find the secret research facility.
/end.