ordered mono leafs today

would they help with my slide alinks.i put ss springs on it last week and took it to the track.i lost almost .2 at 60ft.was very disappointed.so i am taking them back off.both my stock and ss springs are so stiff i can barely even push the car down.i also have adjustable rear shocks which i have changed the settings with no improvement.running 26x11.50 mt et.and was still spinning 60ft.with 3.91 gears.went from 1.6 to 1.8 60 ft.