1. What's your current + on the sword? You need different runes to upgrade an item based on how much + is currently has. For example, if you're grading +1-3, you need a elrue, and +4-6 needs a lix. Also, make sure the item level of your weapon and the item level up the upgrade rune are the same.
3. You can get alchemy stones in Elderine based on your fame and also from treasure chests. I think some mobs might drop them, but I'm not 100% on that.
Hope that helps, and let me know if you need anything else.
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