That means you have droop. Do you have access to gauge block and a droop gauge like the hudy ones? This is the best way to measure and adjust the droop.
My understanding is if you have too much front droop you allow the front to rise too much and the CG goes up -----> transfering more weight to the back. You end up losing front traction because the less weight is pushing down on the front wheels.
What is the front ride height compare to the rear. Have the front a little lower than the rear.
Look
here
Read the end of the paragraph after the the picture in 4.2. Even though he initially said weight transfer is not affected by the pitch on the car, he finishes with having more weigh transfer when the car has a lot of negative suspension (droop).
Also look
here at section 2.6 suspension travel. This explains it better.