Okay so i weigh about 200 pounds and ride a polaris fusion 600 and i thought i bought the heavy duty torsion springs about 3,000 miles ago and have about 2,000 miles on the front shocks and about 800 on the rear shocks. I have the blocks on high and still bottom out relatively easy. So I believe all my shocks need to be rebuilt because it is not "rebounding" to well and also new springs? Do the springs need to be replaced after hard riding? And also i cant find any .405 Springs for the iq suspension only .359 so if you guys know where i can find them that would be great. Or any other input you have to get this sled set up for more aggressive riding.