All I say is that you may have to wash your hair more often. I used to keep my twists in for two weeks at a time and that gave me dandruff. Even with rinsing! Now, I never keep twists in for more than a week. Minimize the amount of products that you use. I know that oiling your scalp daily isn't going to make flakes go away. You have to bring your scalp back to its natural moisture balance before pouring lots of oil/products on it...it just makes it worse.
You seem to be posting alot about FLAKES. Have you tried doing a hot oil treatment yet? I did it and it took care of my flake problem. It balanced my scalp moisture..I don't oil my scalp anymore. Now with the hot oil, you're probably not going to see results right away. You may have to do it once a week for a month in order to see results, at least that was for me. Anyway, my scalp is breathing and is healthy because of that...