I remember on end of 90 cap, i had my inventory full of elixirs, so i throw 8 elixirs on a 85 staff and it went after one time failing to +5, next was a chinese necklace with great stats clean, straight with less then 10 elixirs. One day later i managed to get my cleric rod with 14 elixirs to +5
But then again, i werent able to +5 my earrings lvl 87, i wasted for sure around 200 elixirs for it .. what an evil item -.-
P.s.: Im not a pro fuser, actually i fail alot even on +3 sometimes it takes me 20 elixirs, Steady helps, restart helps maybe too, fusing on a non crowded place as well (however i never run out of town cause im lazy).