Moog UCA bushing installation

Another question can I get rid of them PITA pressed in washers and just use regular washers? I spent all morning getting them damn things in and I finally got them and my bolts wont go thru them. So I took the uca back out and tried to push the bolt through out of the car and the damn things popped off again :BangHead: so can I just ditch them and use washers?