Hi all, looking for some advice on leaf springs. My series 3 Swb truck cab came with parabolic springs on the front and leaf on the rear. It doesn’t drive as ‘smooth’ as my previous series. More like a seesaw. The question is “should I put a set of parabolic springs on the rear or go for leaf all around”. I changed the shocks but didn’t make much difference. When towing with a bit of weight on the back it is actually better. Thanks