pro... I can't help you with your question, but besides complimenting you for a cool animation & admitting that it is far more advanced then any I have done... could I be so presumptious to offer a design suggestion anyway?
The twinkling of the highlights gave me an idea that I think would be fairly easy, & would be subtle enough to not read as busy or overdone... but at the same time might add pop & pizazz beyond what you already have.
Once the lettering moves into plac & rests there... your animation then focuses on the twinkling & the color change of the sub-copy. Personally I don't find the sub-copy color change to do much for me & the twinkling has an unnatural quality right now. What I think is lacking is a further extension of the underlying concept that if the lettering is not moving, a light source must be moving to provide that twinkle in the reflection. Because you have a bevel & a shadow... assuming you created these with layer styles... it would be quite easy to set up 8 or 10 frames of a gradually shifting light source, applied globally, to all layers with bevels or shadows, resulting in a pan from right to left & back, like under a circus tent with roving spotlights overhead. Add evidence of a subtle spotlight beam crossing over the checkered flag to complete the illusion, & you might wish to adjust your sub-copy animation to fit this idea as well, rather then flashing in an unrelated manner.
It's easy for me to say it would not be difficult, but of course I don't know that, and while it sounds like a cool idea to me... it may just sound like a lot of work to you... but when I get a flash of an idea... I am compelled to share it, so there you have it.
What you've got looks really cool & my entire website pales by comparison, so take it for what it's worth.