Progressive recommends 75/120 springs for the 650 but 90/130 springs for the 750. Both bikes similar weight so wondering why the different springs? As for those with these shocks, can you share your thoughts on the springs? I'm over weight at 190 lbs but planning to lose. Are the 90/130 springs going to be too heavy? I'm not the most aggressive rider around. Progressive recommends the 90/130 springs for the 1000 bikes, so I'm leaning toward the lighter springs but would welcome some thoughts.