These guys are right, he's being very, very bad about renewing mist and Uplift usage. First, here's a log of our most recent Zor'lok kill (from my healing so you can compare):
http://worldoflogs.com/reports/rt-9m...?s=1509&e=1868
He needs to keep renewing mist on cooldown, and always put the initial cast on someone who's injured, since it's harder to control the jumps afterward. For FaV, make sure the monk has used Thunder Focus Tea after keeping Renewing Mist on cooldown. If he does use TFT, about 10 seconds before FaV happens, he should be able to cover the entire raid with Renewing. This way, if he has full Chi, he can Uplift spam. Also something to note for that, put him in the bubble under the boss, he can spinning crane kick and hit the next closest bubble if he positions himself right.
Since he isn't talented for him, Casting Xuen during FaV platform does 2 things, helps with his Eminence healing (healing through his attacks), and he does some decent damage, so it pushes the phase. Your monk it talented currently for Rushing Jade Wind, which is not a good talent for that fight.
If DPS is an issue, maybe your monk should try fistweaving just to help move things along. Now, I know it sounds crazy since monk DPS isn't all that great, but it's a twofold thing: For one, of course is the DPS, and Xuen DOES get any buffs applied, so if say, the warrior drops skull banner, which buffs the monk, Xuen will get it. This will increase the eminence healing of both the monk and Xuen. Also, have him keep the Tiger Power buff up (the one from using Tiger Palm, 30% armor ignore), it'll help, although very slightly. The second reason was touched on in the first: eminence healing. While eminence healing isn't as "powerful" as your monk casting a bunch of nuke Surging Mist (which is BAD for the mana pool), it is a slow, constant AoE heal that goes on throughout the fight. Crit helps too, if a melee swing or a Jab gets a crit, the eminence heal crits as well.
Lastly, I would get your DPS to take a look at our logs as well. Your hunter and warlocks might be able to benefit from comparing spell usage. 50k DPS as top dps for your group is just...well, lets just say that's the number nobody should be under after being even in full LFR gear and nothing more (if you are serious about clearing the content and improving your group's performance). It's a matter of spell usage, rotation, and timing certain things well, so some of your guys might need to read a few guides and compare some logs.