One of the worlds on my server is set to hard difficulty and i noticed that when enchanting, things will only enchant with 1 enchantment, even if i have 50 EXP. On my worlds with normal difficulty, if you enchant items with 50 EXP you usually get 3 enchantments. My question is; is this normal for a hard world? If so, how much EXP do i need before i can get 3 enchantments on one item?