The compression test is pointless if you have any binding. You must free up any binding you have otherwise it's all for naught. Regardless, to slow an end down you need to move the shocks inward. Don't think of it as horizontal or vertical, but in and out. The shock will be more effective further out and less effective further iN.

I may have this part backwards, but changing the upper mounting has a larger effect than changing the lower mounting. In otherwise, set the upper and fine tune it with the lower.

Don't expect the front to initially bounce like the rear. There is less weight up front, so it'll return to neutral quicker until the springs are balanced properly.