[mysticmissle]

i am no expert but when i was tryin gto get my tbrake car to hook on radials it was difficult for me to find the sweet spot. i think you have the right equipment. if it was mine, i would try to limit the front arms dropping so much first and see where it goes. if the arms dont drop as much, more motion should be transfered to the rear tires, which may ''fix'' it.
the car is trying to go up with good power and transfer, but the front end is falling down before it has enough momentum to not unload the tires in my opinion