Special Suit - Dragon, Divine Suit, Tiger suit etc

Corvinus

Hmm I have some feeling that probability went down even with advanced refine again. In last four days I was lucky to get about 50 advanced order. That is 250 gold. I use all of them (together with at least 80 normal refine) to get 4 star equip from 3 star. Guess what. Nothing. Usually I can do this at least once a week but this piece of equip seems to be tainted with bad luck magic as I´m trying to do the trick full month.  My question is does every piece of three star equip have the same chance to get on four star or not? And, has the probability rate of advanced orders decline recently ?