I found my YAZZY the other day
(greenill ult mines, gillchich) So far I have gotten 2 PDs and 1 Yasminkov 3000R. I found the Yaz online, in a game I made for myself. (was alone) I found it in the 2nd room lol! I really think that is the way to find stuff, other than having a friend who will agree to let you have that particular rare item if it drops. Of course, I am a lev 140 ramar and have done quite a few runs of ult mines, so I don't feel lucky, I got what I earned. I think you will find your Yaz as long as you stick with it, and do some HS so you can level up and run through the Mines a little quicker!