If you need it here are the IDs for the Grim Focus attack proc (non morphed ranks), I use them in BuffTimers because they refresh the duration on every LA to 20s.
[63958] = true, --grim focus I refresh on LA
[63968] = true, --grim focus II refresh on LA
[64179] = true, --grim focus III refresh on LA
[63970] = true, --grim focus IV refresh on LA
Sadly forgot to collect them for the morphs as I switched to tracking the berserk buff
sirinsidiator posted them for the max rank morphs at least, don't know if lower rank morphs have different IDs too like the basic skill.