I think you answered your own question, addibs! Just like your sig says: "You try, you fail, you try, you fail; but the only true failure, is when you stop trying."
Keep on trying different finger positions! Of course, as mentioned above, make sure the deck isnt too fa away. Normally, right before I release the cards, the deck is about 4 or 5 inches away from my hand. My fingers are positioned at 1/4 of the card from the right.
Hope this helps!