I bought 4 Monroe Reflex shocks for my 98 Suburban. I just installed the passenger front, and realized that there are rubber bushings on the bottom end.... but on the top of the shock, where there are two "arms" on either side that the bolt goes through, there is no rubber. The shocks I took off had a rubber covering on those, but they are so old and crappy I don't want to re-use them. No extra bushings came with the shocks. Was I supposed to buy them separately? Or do I not need the top bushings? I need help quick, I have to have this done by the end of the night!