My guess is you probably have them straight enough, if only a slight wobble. However, you can continue to work on them to remove most of that as well. Bows in the middle of the shaft can usually be taken out with some rubbing/palm pressure. For sharper bends nearer the ends, I use a roller. A little heat is useful to straighten more difficult bends, and it seems to help the wood stay straighter.
Wood often will straighten out the gentle bends through shooting, provided, of course, that you don't bend them more by pulling them out of the target incorrectly. Use two hands, and pull straight back. One handed arrow pulling, particularly if the pull isn't straight back, is a good way to bend woodies.
Nice thing about wood is it will usually shoot straight even if it the arrow isn't perfectly straight. Of course, crooked nocks or points will mess up arrow flight regardless. Good luck.