I played mir2 and MIR2 gold from 1999 and till 2001, it was just 42 grade. Then my equipment was been stolen, so I gave up playing it. But now when I have time, I will play it for a while and I am so envy to someone who has high quality weapons.
I always wish I can have such kind's equipments. I still have no ability to get the lucky number, and all upgrading by matting knives. Now I would like to enjoy the experience with you. First is matting knives and I was using cream, two blue jade and two death till it end. Then pack up the knives which may use two times or even three to four.
I just use for two times generally and then mat knives again. The status of the mine is here, it is certain that you had better use rubbish mine when you mat knives. The most is 4 and the least is 2. When refining the good knives I always use the grade more than 15, so plus all the four would of course more than 60.
There no special mentioned the persistent of every mine, if the all grade is more than 60; it will not lower the persistent of the knife. These are all my experience and I would like it would have help to you. Here I would like to say is the accessories you had to use for upgrading the adjudication should be the memory chain, deathium and coral. The number of them is also from 2 to 6 which all depend to you.
Here I also have something to tell the high grade players that everyone will experience the low grade period, so you can not despise them.