Tbh this seems a lil bit weird.
Before Tauti i made my StandarT (couldn't resist Smittie ;)) Seraph Set 3*120. I had 0 fails while using ele stones. And also 0 fails while using ele crys.
After Tauti i had 3/10 Holy Cry fails on a TW LA BP. :confused::confused:
From my own experience I would say that Crystals succeed on armor at about 95% regardless of type (bound, standard, blessed). Weapons seemed to be closer to 50%.