I have koni yellows/H&R Race Springs on my DA for about 13months now. My suspension is very squeeky when going over bumps or unfair roads. Its especially very squeeky on rainy days when it gets wet. I'm thinking it might be the springs. What could be the cause of this?

I'm removing the H&R's tomorrow for Ground Control's with 8" springs. I want to know what it could be if not the springs so I can replace it tomorrow while im putting the ground controls on. Thanks.