1st ) CONTROL the transition, if you know you can force it before a new shambler, do, if you know you cant, stop dps on lk and clear any excess adds if you can.
2nd) put the prot warrs vigilance on on the pala so he can constantly take adds.
3) pala takes first raging, prot warr takes rest so pala can grab lk in p2 - ardent defender for the win.
4) hunter frost trap valks, prot warr stuns, prot pala HoJ
in p2 EVERYONEEEE stack on the same spot except the tanks, stun and slow valks.
got any logs etc? it might simply be a dps issue, or maybe peopel are too busy trying to win the meters to swap to adds.
if the warlock gets grabbed by a valkyr ignore the valk, any good warlock knows to use portal when they get dropped.