whilst your under there, might be worth checking your subframe bolts failsafe washers are tight and any other arm bolts to the upper and lower ones. you wont be able to get a spanner on the upper arm bolts but may see some play up and down on the subframe once the weight is off the roadwheels. top mounts shocker bolts also need checking , but i still think its a length combination between the shocks and spring. happy hunting !!