[Alan Roehrich]

That car does not "work" at all. The car barely rotates on the launch, and it immediately falls back down.

Either it doesn't make hardly any torque, the converter is not working, or the suspension is bound up.

It looks as though the rear may be bound up, or it is too stiff. There's no separation in the rear when the car leaves.

It also appears that once the car is "loaded up" on the starting line, it only has about 1" or so of travel before the suspension tops out. Or at least before the front suspension stops working, due to a bind, or other problem.

Taller ball joints may help, they'll at least allow you to keep decent alignment.