hi,
yes +20 is intended. I have around 1200 spirit (far too much) have no mana issues at all.
trinkets: Goren Soul Repository, Ironspike Chew Toy both heroic and I'm fully crit enchanted.
I tried your settings on LFR but tank healing is very low. The CR is casting Holy radiance or light of dawn even if I target a tank with 50-60% health.
Did I broke something?