Something changed with the forging and refining success rates on Jainus.
I tried 25 times to refine one stat on an item. I succeeded on the 25th - 30th time since I lost count. So the probability of success for a Status Refine is between 3.33% to 4% chance. I began trying to refine the other stat and stopped.
Forging rates is just the same. I lost 5 decent Edwin sets. Also failed to forge unique weapons more than 10 times just for the crystals.
Also, the reinforcement success rates also decreased. I went through 12 premium stones and 7,000 Grade A Crystals trying to get one weapon above +5. After trying 12 times I didn't success even one time to get a +6 to +8 with a premium stone.
Better not to forge or refine until this gets fixed. I thought Jainus was suppose to have better forge and refine rates but it seems the rates are now close to 0%. 3% to 4% success chance = almost impossible to forge or refine anything and refining stats will eat a lot of crones trying for that 4% success.