If you are using a G-tech, they aren't the most reliable instruments in the world. And if your rear shocks are blown, that could certainly make a difference as far as wheel hop goes also. When I put my spacers on last spring, wheel hop was reduced but not eliminated. Then I realized that my DS reaar shock was blown. I installed KYBs & Eibachs, and now my wheelhop is almost completely eliminated (or I finally learned how to launch the car ;)).