at my pre-re/refine_db.txt is no 0,66 thats the problem:
// Note: Chances for +11 and higher are not verified - 10% is a rumor from iRO wiki.
// A note about renewal Armors, there may or may not be another bonus, according to iRO wiki: Every upgrade gives floor[( 3 + current upgrade ) / 4] equipment DEF)
0,0,0,0,100:100,100:100,100:100,100:100,60:200,40:200,40:200,20:200,20:300,10:300,100:300,100:300,100:400,100:400,90:400,60:400,60:500,30:500,30:500,10:500
// Level 1 weapons
1,200,8,300,100:0,100:0,100:0,100:0,100:0,100:0,100:0,60:0,40:0,20:0,100:0,100:0,100:0,100:0,100:0,100:300,100:300,90:300,60:300,20:300
// Level 2 weapons
2,300,7,500,100:0,100:0,100:0,100:0,100:0,100:0,60:0,40:0,20:0,20:0,100:0,100:0,100:0,100:0,100:0,100:600,90:600,60:600,30:600,20:600
// Level 3 weapons
3,500,6,800,100:0,100:0,100:0,100:0,100:0,60:0,50:0,20:0,20:0,20:0,100:0,100:0,100:0,100:0,100:0,90:900,75:900,30:900,30:900,20:900
// Level 4 weapons
4,700,5,1400,100:0,100:0,100:0,100:0,60:0,40:0,40:0,20:0,20:0,10:0,100:0,100:0,100:0,100:0,90:0,60:1200,60:1200,30:1200,30:1200,10:1200