1. When you desecrate an item with 6 mods, does it remove one mod right away or does it remove when you choose what you want at the well of souls?

2. Are desecration omens applied during desecration or when you review the mod at the well of souls?

3. If you use a perfect essence that gives a suffix (like +3 spell levels on foci) and the item has 6 mods is it guaranteed that a suffix will be removed to keep 3 suffix/3 prefix?

4. What happens if you do it with Omen of Sinistral Crystallisation active? will it remove a prefix and give a suffix or will the omen fail?