It was funny watching you do the 4x4x4; I remember when I did the same thing you do there - putting down the cube and counting on my fingers to figure out if I've got all the pieces or if I'm missing some. You really need to develop a system to take care of that - it wastes a lot of valuable time.
And I agree with the comment on YouTube - keep at it - I'm sure you can get 10/10 with the new rules someday!