You can't "miss a 2k crit", because crit always hit, unless you have more crit chances than hit chances. A miss always is a "non critical miss"

Either you're playing with a real endgame gear and already managed to reach 5/7 % +hit (zg enchant*2, ds spaulders, ds leggings, onyxia's pendant, don julio or accuria, true flight wrstguards...), which means you're not gaining a full 3% to hit ;
either you're playing with an average gear, and should be waiting for a few more loots (especially gs gauntlets) unless you already have lok'delar, and your guild REALLY doesn't need those precious lava cores.