Devo, As a coach I would NEVER recommend two fingers above the nock! Index finger over the nock, middle and ring fingers below and the little finger not on the string at all. OR, all three under the nock with the index finger just barely touching the nock.
If you haven't seen it, I have a video on You Tube, go there and do a search for TheMoebow 1 and watch the "release tips" video. See if that helps.
I'll add that just "I've tried shooting both 3 under and split today." is NOT enough. IF you are serious about this, you must work on a technique for a couple months before you decide to use or discard it. "Trying it today" will not tell you ANYTHING!
Arne