A few months ago I installed 6 inch superlift springs (HD) and pro comp (3000s) on all four corners of my blazer. All new sleeves/bushings and such. At the moment the ride is extremely harsh, almost dangerous at speed due to some loss of control. My question is - would doubling up on shocks at each wheel, or maybe moving up to some firmer ones, smooth it out some? I've had several people give me varying opinions.