Do you use Makromanagment? How X-Key. With the right Makrocombo you can Box 6 different Classes but you never can Box a Moria Raid with 6 Different Classes you need to many "Drinks" in the 6 Mann Instances and you need many Special Tacktick and many different Classes.

You need:
Tank
Healer
Combo & Stun
Damage

My Favorite Setup is: Tank - Healer - Loremaster - Captin - Runkeeper - Runkeeper

Its no Problem to Raid Angmar "CD - Uru" With 3 Chars on 60 i think i Train the 6 Mann in Teamplay befor i go to Raid Moria ^^

I hope you understand my bad English 8D