Part of your problem on the rear is the angle of the shocks when you flop the rear end to the top of the springs . The shocks are at to extreme of an angle to do their job. You could try some spring clamps on the forward section of the spring also . I have actually done way more work to the front end to get mine to hook than the rear. The rear is basically shocks relocated On CE brackets Rancho 9 ways with Caltracs in lower hole and shackle bushings honed out till the move freely when assembled.