I decided to jack up my car today because I noticed my left wheel being a little closer to the front of the wheel well then the other the trailing arm was bent so I said ohhh no problem I'll have this off in ten minutes...... four hours later I have the trailing arm off but the new trailing arm has a metal insert thing inside the rubber bushing and the stock bolt won't fit through it? the stock trailing arm only had this metal thing on the side that mounts to the frame?