The reason that I expect of Kozuka includes this video, TV program of February 11, 2012.
小塚孝彦【特集】 4回転の新たな感覚 - Takahiko KOZUKA【Special feature】New feeling of Quad jump
http://www.youtube.com/watch?v=4D8PiOFOmfs
3:30 Comparison of Kozuka's quad of the first half this season and the recent.
5.40 Quad-triple 4T-3T jump.
6:35 4T,4T-2T , in the National Athletic Meet.
The detailed content is as follows. Because he has a faithful character, he does not make such a remark without very confidence to oneself.
0:40 The arrival of the Quad generation. By rule revision after the Vancouver Olympic Games, risk deducted points of by failure was reduced, and difficult jumps came to be evaluated more, so many skaters come to work on it.
1.10 Takahiko said; "Quad is required...in world now."
Quad became the necessity for victory. Takahiko Kozuka challenges the fierce fight.
Kozuka which won a silver medal by the world championship of the last year became equal with top skaters.
1.40 T; "At the time of world championship(2011), I was able to jump accidentally, ...timing and condition of the power matched and were able to jump."
"But, quad became so necessarily, at that time. ...It is natural, if I talk in an insolent way."
That success of him, it was done in Japanese championship 2011. It was a successful jump for the first time this season, for him.
2.22 T; "Quad which I did by the Japanese championship was natural unlike a case of the world championship(2011) accidental. I controlled my body by myself and was able to jump for granted."
The quad jump that he was able to never succeed in in the first half in this season. But now, why was he able to jump for granted?
2.55 T;"About a timing for myself. Though I intended to understand it by myself, actually, it was slightly earlier than it to be right."
It was the timing when he jumped.
3.18 T; "It's 1,2,3,4jump! so far. But now, 1,2,3･･･! around 3.2!?"
This is his quad of the first half in this season.(He jumped, but fell.) In contrast, he succeeds in the Japanese championship. He jumped in a one early timing. It's clear at a glance, and it is totally different.
4.32 T; "It is a timing after I put the weight on the right foot, really for an instant. After I turned three times, there was the sense that the weight was carried on to the right foot most. The feelings that power begins at a stretch POM like time when I pull rubber and separated it."
The advantage of jumping just after a turn is easy to put a center of gravity on the right foot, and there is a twist to the upper body, and power piles up. It is the secret of the success to make a better condition in this way. In fact, Daisuke Takahashi and Patrick Chan and Nan Song and others take a similar method.
6.03 T; "I still wonder by such a jump whether it is good. But the fact that it can land at is reliable. Therefore I do not fail if there are this timing and feelings."
And, as for him, time to try ability came since Japan championship. He challenged quad two times and landed. There was slight underrotated judgment. But it became big confidence of his own to have landed.
7.15 T; "It is big progress for oneself that I was able to adopt quad two times for a free program. Though I was glad, as for it, I want to practice being enough calmly from now on."
END
I've been protesting for him all season. He needs to raise both his TES and PCS. This video report focuses on his working on his quads which of course could help his TES and indirectly his PCS especially if it imparts confidence to him. However, he cannot count on accidental success two years in a row, (maybe? 
,) so getting the quad consistent and reliable will go a long way to boost every aspect of his skating - technical, mental, and presentation wise.
