Are they too wide? I had the same problem when I went to put mine in. Mine seemed to be about 1/8" to 3/16" too wide with the new bushings and the metal washers on each side. On mine, the actual arms of the control arm compressed a bit (towards each other) as we installed them and they fit fine. We just got one side started, pushed the other side to get it to start and used a piece of 2x4 and a small hammer on the outer rim by the balljoint to coax them into position. It didn't take much and they slid right in.
I've gotten my whole front in and aligned and everything is fine.
