World Bosses - Layering?!

Hi all,

I’m on yojamba server US. I’ve been routinely trying farm world bosses since P2 released. I’ve been fortunate to kill kazzak a few times and azuregos once. However, in the last 24 hrs on my server both kazzak and azuregos spawned and were quickly killed. I was at both spawn points when both spawned, except they layered in both times at 50% health with full raid groups killing them. Azuregos just last hour spawned whilst i had /tar spirit of azuregos and suddenly he layered in with a full 30 man horde raid on him. This is not right ? how can you have a fair crack at world bosses when you run the risk of rng when it comes to layers? i thought layering was gone on my server.