9D pk ref mats

As i noticed in-game, Few peoples are able to combine +13 - +15 ref mats. Can anyone share how to do it? Thanks

Tell GM to refine your weapon (If you have your weapon +12 and have +13 material)

soo.. you telling me that you buy your server files 4.3 and you dont know how to solve a little bug ?

wtf are u guys talkin about, he asked where to combine the materials..

U can combine it in tibet 4th vill at the merchant (which u could combine banners before).

U need BE and poison cookie as materials (cookies u can get from black market).

I lol'd, why not use 9DPK forum?

He's asking if do you know any exploit for the ref material combine from tibet vill.
Yeah i wish to know that aswell, 2% success rate seems kind of low for every1...