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Sure do. You have to use nuts on the backside of the bed, but you don't want to tighten them up without having a spacer of some sort to prevent you from tearing the bed up. My S4 came with printed washers that went in between the springs and the aluminum bed, so I just used those. Adding the nuts to hold the screw in place will make the spring compress, but should still work just fine on the S4, but may not work on other CR-10's. I recently made some larger wheels for a CR-10S but the springs were already compressed more so I'm looking for a shorter spring that I am comfortable recommending. One of the pictures shows the printed washer with the nut above the spring, and really.. that distance can be shortened a bit, but it worked good so I left it as is. Hope this helps.