Softer springs vs less bar, a little to stiff in the back Options

[ottox914]

The balance of the car, F/R is nice, it rotates just as I would want it to on short courses, once the Hoosiers get some heat in them. Its a little looser on the longer courses. Gotta learn how to adjust car and driver for them... Just every now and then the rear will load up and "hop". It happened once coming off the line at an event, and again last week when I finally got this one sweeper right, braked early, and got on the gas hard in mid turn to maximize the exit speed. No one at that corner heard or saw anything odd about the car, but I sure felt it. It has 175# springs in the back, and an adjustable sway bar, with about 5" of adjustment, and its set at 2" in from full soft.

So. I want to keep the balance of the car, loose the hopping, (it wil spin the skins if I get on the gas to hard and to early at corner exit also), am I best served by installing the 150 springs sitting in the garage, or loosening the bar a little.

Also, the car has Konis on the back, usually run full soft. When set full hard as an experiment, (gotta try the whole range, just cuz soft seems to work, how do you know a little firmer won't be a little better?) thats when I got the hopping off the line.