Now, for those who like Mandingo, refining upgraded a tutorial how to move from +11 to +12 with 50% + chance of refining .. ta ae good luck:
REFINE +3 ~ +5 = XX:51 ~ XX:59;
REFINE +6 ~ +7 = XX:01 ~ XX:05;
REFINE +8 = Exatamente às XX:21;
REFINE +9 = XX:41 XX:45 XX:49
REFINE +10 = XX:31 XX:35 XX:39
REFINE +11 = XX:11 XX:15 XX:19
REFINE +12 = XX:35 XX:45 XX:55