shocks be the problem? = No
It sounds like the springs may be sagging, The vehicle's weight sits on the spring, not the shock.

I've seen this happen on even the more expensive brand name springs.

Write or call the company you bought the setup from and see if they can help you out.

I had the same problem with a set of Neuspeed Race Springs on my '00 Si .
They were 2 years old.... And I bought them from a member on here Used.
I called Neuspeed and they sent me one new rear Race Spring for free.
They also had me send the old spring back to them so they could research why the material lost stiffness.

Try it, what do you have to loose.