Those springs and rollers generally depends on your riding style, your weight, the terrain you're in, and what kind of power you have. It's all kinda like a balancing act between all the cvt components. Stiffer torque spring , in idea, would benefit from heavier weights to encourage the belt to rise on the front pulley and lower on the rear pulley. And the opposite for a lighter spring, where is you had too heavy of weights it would force the rear to shift down faster due to the weights moving the belt up quicker on the variator. It can take a bit of trial and error. Then you also need to keep in mind that your new torque spring will be more stiff for a while as it settles in. I took mine and stomped on it repeated for a few minutes before install. Kinda took a bit of the stress off of it. I wouldn't suggest that, really. Not sure if it was counterproductive or not.
Right now I run with the malossi variator, 9 gram rollers, malossi delta clutch with white clutch springs, middle setting, yellow NYC spring, 1500, but very used, with the bearing kit to reduce spring friction, which in turn makes the spring seem more stiff since it raises it a quarter inch or so. My setup works great for me in the mountains of NC. Almost no situations of bogging when coming out of corners.
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