I just raised my shocks all around to the 4th setting and the back ones by far are the hardest to do! Make sure you raise the wheels off the ground, spray a good lube on the shock ramp and get in there with a big enough pair of channels locks, squeeze tight and turn, they will move but it will take quite a bit of effort! The rear left is by far the worst, not much room in there at all. Good Luck........Irv