Yeah well because the acacias are heavy in oils you'll always get them, like you said you can re-crystallize to get rid of the oils but I find them just as active. It definitely takes quite a while longer to dry but after it has dried properly (a week or 2, or 3??) there's not much of a difference at all, very active! Smoking it when it's wet though will result in less visuals/effects so my best advice is to let that stuff dry dry and dry, I'll usually just leave it in a bowl in my room; just make sure you air dry it and don't leave it in the sun. 2-3grams a kilo is good, what was the height of the tree?