Cam washer kit

I’m a bit nervous here because I put together my magnum 360 with a long snout cam from Hughes but did not use the cam washer and bolt. I had a ton of parts on my work bench and just now found the washer and bolt. Never noticed any issues when I put the engine together? It’s my first build. I’m pretty far along in having it back together. I’m going to run electric fuel pump if that matters. I think I’m screwed? I’m hoping I am wrong and I don’t have to open things back up.