I just pulled my old gear and it didn't have the spacer. It just had the oval plate. My old cam gear was flush with the cam face, so that is how I put it back on. I just used my old main berring bolt, the harmonic balancer washer and a big socket. Pressed on no problem. Is this spacer a big deal? I would hate to pull and repress my gear back on since both the engines I have been working on as well as junk yard runs I have never seen this spacer...