Jad healers on zuk are meant to be spawned infront of jad so u can manage to attack them without running miles from the wall. [FOOTAGE from 07: https://gyazo.com/d083129844b5874f864bf9b9b8e46b91 ] Jad healers everywere else but in zuk spawn randomly i believe. They made it like that so u dont have to run off the wall and get hit by the boss.
ADD: The jad healer ''bug'' has been the biggest problem i have had trying to do the zuk with a cbow. It is the only reason it is hard imo. Managing to bolt 3 healers while running with the wall like this : https://gyazo.com/f2d88755ee0a93b2d04eb71a558dbe5e . WITHOUT tanking a boss hit is very very hard. Its no problem if using a tbow cause u dont actually even have to hit the healers, but crossbows are a lot lower dps and the jad will tank the hits with the healers otherwise.