I bought new panhard bar, and trailing arm bushings from OGTS. The panhard bushings went in fairly easily. The trailing arm bushings are another story. I have boiled them, greased them, and exerted all of the force I can muster. The bushings have a lip on both ends, which makes it impossible to start them into the hole. It seems like I need to trim a lip on each one, so I can get them started. Anybody know the trick?