As I watched your first vid you put up it looked like your rear tire squatted pretty good as you spun. A lot of weight is transferring to the rear on the launch so I'm wondering if you ran a Lil higher psi in the rear so the tires wouldn't concave in the center as much when the tire sqatts on launches. I know many people that has pulled better 60 ft times with more psi in the rear then front to compensate the weight exchange. I personally never tried it as I'm 2 hours from a track but it might help just an idea to think about lol