Why? I *think* mine are inverted. If you just lower the car by resetting the leaves, you'll end up with rather flat looking leafs. Mine are almost flat, I've actually had my car raised slightly because the leafs were starting to invert.
And yes, softer springs are easier to drive on, and easier on the kidneys. Also watch your front-rear ratio, I'm running 250/200, which seems to work for me. The car is set up actually quite oversteery and will hang the tail out with very little persuasion, there is very little understeer at all.