Im wondering what spring rates to run for a 94 F150. It is an ex-cab with 2.5 14inch King coilovers, camburg extended beams and radius arms and king bumpstops. The top spring is 350lbs while the bottom is 500lbs. I was told this is kinda soft and I should run a 400lbs spring on top. I was just curious as to what you guys are running.