How come when I have an enchanted item it does not let me upgrade past flawless? I have 100 in smithing and have every smithing perk unlocked and to the max. For example I have Dark Brotherhood shrouded armor. But it wont let me upgrade past flawless. It says "You lack the required skill to upgrade this weapon" what the heck does it say that? Am I doing something wrong? Anyone else have this problem?

anyone?

Use enchantments or potions to boost smithing level past 100

You need 150 smithing to make Epic items and 200 to make Legendary items.