Agathion Aux enchants not working?

[Predii]

they are just simply not working (at least the B grade ones for armors)

base succes rate is 66% (2/3) ,  Aux eab should add 23 % thats 89% +-

i had 40 aux enchants , and failed 35 out of them. maybe im just unlucky but i dont think so. would be cool if some GM could check it ;o even if its just some minor bug