Natural reaction for a coil spring is to twist when compressed.The simple answer is to install this low profile needle bearing and thrust washer kit under the coil. You can see the difference in the pictures the coils compresses and twist freely causing less resistance and bind as you suspension goes through its travel.

Thrust Bearing - 2-1/2 in ID - 3-1/4 in OD

If out of stock please see P/N: BEA8000